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252b5132 | 1 | /* Alpha specific support for 64-bit ELF |
73896efb | 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
7898deda | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Richard Henderson <rth@tamu.edu>. |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | /* We need a published ABI spec for this. Until one comes out, don't | |
23 | assume this'll remain unchanged forever. */ | |
24 | ||
25 | #include "bfd.h" | |
26 | #include "sysdep.h" | |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | ||
30 | #include "elf/alpha.h" | |
31 | ||
32 | #define ALPHAECOFF | |
33 | ||
34 | #define NO_COFF_RELOCS | |
35 | #define NO_COFF_SYMBOLS | |
36 | #define NO_COFF_LINENOS | |
37 | ||
fe8bc63d | 38 | /* Get the ECOFF swapping routines. Needed for the debug information. */ |
252b5132 RH |
39 | #include "coff/internal.h" |
40 | #include "coff/sym.h" | |
41 | #include "coff/symconst.h" | |
42 | #include "coff/ecoff.h" | |
43 | #include "coff/alpha.h" | |
44 | #include "aout/ar.h" | |
45 | #include "libcoff.h" | |
46 | #include "libecoff.h" | |
47 | #define ECOFF_64 | |
48 | #include "ecoffswap.h" | |
49 | ||
8fb35fed RH |
50 | static int alpha_elf_dynamic_symbol_p |
51 | PARAMS((struct elf_link_hash_entry *, struct bfd_link_info *)); | |
252b5132 RH |
52 | static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc |
53 | PARAMS((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); | |
54 | static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create | |
55 | PARAMS((bfd *)); | |
56 | ||
57 | static bfd_reloc_status_type elf64_alpha_reloc_nil | |
58 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
59 | static bfd_reloc_status_type elf64_alpha_reloc_bad | |
60 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
61 | static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp | |
62 | PARAMS((bfd *, bfd_vma, bfd_byte *, bfd_byte *)); | |
63 | static bfd_reloc_status_type elf64_alpha_reloc_gpdisp | |
64 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); | |
65 | ||
66 | static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup | |
67 | PARAMS((bfd *, bfd_reloc_code_real_type)); | |
68 | static void elf64_alpha_info_to_howto | |
69 | PARAMS((bfd *, arelent *, Elf64_Internal_Rela *)); | |
70 | ||
8fb35fed RH |
71 | static boolean elf64_alpha_mkobject |
72 | PARAMS((bfd *)); | |
252b5132 RH |
73 | static boolean elf64_alpha_object_p |
74 | PARAMS((bfd *)); | |
75 | static boolean elf64_alpha_section_from_shdr | |
76 | PARAMS((bfd *, Elf64_Internal_Shdr *, char *)); | |
204692d7 RH |
77 | static boolean elf64_alpha_section_flags |
78 | PARAMS((flagword *, Elf64_Internal_Shdr *)); | |
252b5132 RH |
79 | static boolean elf64_alpha_fake_sections |
80 | PARAMS((bfd *, Elf64_Internal_Shdr *, asection *)); | |
81 | static boolean elf64_alpha_create_got_section | |
82 | PARAMS((bfd *, struct bfd_link_info *)); | |
83 | static boolean elf64_alpha_create_dynamic_sections | |
84 | PARAMS((bfd *, struct bfd_link_info *)); | |
85 | ||
86 | static boolean elf64_alpha_read_ecoff_info | |
87 | PARAMS((bfd *, asection *, struct ecoff_debug_info *)); | |
88 | static boolean elf64_alpha_is_local_label_name | |
89 | PARAMS((bfd *, const char *)); | |
90 | static boolean elf64_alpha_find_nearest_line | |
91 | PARAMS((bfd *, asection *, asymbol **, bfd_vma, const char **, | |
92 | const char **, unsigned int *)); | |
93 | ||
94 | #if defined(__STDC__) || defined(ALMOST_STDC) | |
95 | struct alpha_elf_link_hash_entry; | |
96 | #endif | |
97 | ||
98 | static boolean elf64_alpha_output_extsym | |
99 | PARAMS((struct alpha_elf_link_hash_entry *, PTR)); | |
100 | ||
101 | static boolean elf64_alpha_can_merge_gots | |
102 | PARAMS((bfd *, bfd *)); | |
103 | static void elf64_alpha_merge_gots | |
104 | PARAMS((bfd *, bfd *)); | |
105 | static boolean elf64_alpha_calc_got_offsets_for_symbol | |
106 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); | |
107 | static void elf64_alpha_calc_got_offsets PARAMS ((struct bfd_link_info *)); | |
108 | static boolean elf64_alpha_size_got_sections | |
f44f99a5 RH |
109 | PARAMS ((struct bfd_link_info *)); |
110 | static boolean elf64_alpha_size_plt_section | |
111 | PARAMS ((struct bfd_link_info *)); | |
112 | static boolean elf64_alpha_size_plt_section_1 | |
113 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); | |
252b5132 RH |
114 | static boolean elf64_alpha_always_size_sections |
115 | PARAMS ((bfd *, struct bfd_link_info *)); | |
3765b1be RH |
116 | static int alpha_dynamic_entries_for_reloc |
117 | PARAMS ((int, int, int)); | |
252b5132 RH |
118 | static boolean elf64_alpha_calc_dynrel_sizes |
119 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); | |
f44f99a5 RH |
120 | static boolean elf64_alpha_size_rela_got_section |
121 | PARAMS ((struct bfd_link_info *)); | |
122 | static boolean elf64_alpha_size_rela_got_1 | |
123 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); | |
252b5132 RH |
124 | static boolean elf64_alpha_add_symbol_hook |
125 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, | |
126 | const char **, flagword *, asection **, bfd_vma *)); | |
3765b1be RH |
127 | static struct alpha_elf_got_entry *get_got_entry |
128 | PARAMS ((bfd *, struct alpha_elf_link_hash_entry *, unsigned long, | |
129 | unsigned long, bfd_vma)); | |
252b5132 RH |
130 | static boolean elf64_alpha_check_relocs |
131 | PARAMS((bfd *, struct bfd_link_info *, asection *sec, | |
132 | const Elf_Internal_Rela *)); | |
133 | static boolean elf64_alpha_adjust_dynamic_symbol | |
134 | PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
135 | static boolean elf64_alpha_size_dynamic_sections | |
136 | PARAMS((bfd *, struct bfd_link_info *)); | |
252b5132 RH |
137 | static boolean elf64_alpha_relocate_section |
138 | PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
139 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
140 | static boolean elf64_alpha_finish_dynamic_symbol | |
141 | PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
142 | Elf_Internal_Sym *)); | |
143 | static boolean elf64_alpha_finish_dynamic_sections | |
144 | PARAMS((bfd *, struct bfd_link_info *)); | |
145 | static boolean elf64_alpha_final_link | |
146 | PARAMS((bfd *, struct bfd_link_info *)); | |
cd6f9321 L |
147 | static boolean elf64_alpha_merge_ind_symbols |
148 | PARAMS((struct alpha_elf_link_hash_entry *, PTR)); | |
149 | static Elf_Internal_Rela * elf64_alpha_find_reloc_at_ofs | |
150 | PARAMS ((Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_vma, int)); | |
fcfbdf31 | 151 | static enum elf_reloc_type_class elf64_alpha_reloc_type_class |
f51e552e | 152 | PARAMS ((const Elf_Internal_Rela *)); |
252b5132 RH |
153 | \f |
154 | struct alpha_elf_link_hash_entry | |
155 | { | |
156 | struct elf_link_hash_entry root; | |
157 | ||
158 | /* External symbol information. */ | |
159 | EXTR esym; | |
160 | ||
161 | /* Cumulative flags for all the .got entries. */ | |
162 | int flags; | |
163 | ||
9e756d64 | 164 | /* Contexts in which a literal was referenced. */ |
3765b1be RH |
165 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
166 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 | |
167 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 | |
168 | #define ALPHA_ELF_LINK_HASH_LU_JSR 0x08 | |
169 | #define ALPHA_ELF_LINK_HASH_LU_TLSGD 0x10 | |
170 | #define ALPHA_ELF_LINK_HASH_LU_TLSLDM 0x20 | |
171 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x38 | |
9e756d64 | 172 | #define ALPHA_ELF_LINK_HASH_TLS_IE 0x40 |
252b5132 RH |
173 | |
174 | /* Used to implement multiple .got subsections. */ | |
175 | struct alpha_elf_got_entry | |
176 | { | |
177 | struct alpha_elf_got_entry *next; | |
178 | ||
179 | /* which .got subsection? */ | |
180 | bfd *gotobj; | |
181 | ||
182 | /* the addend in effect for this entry. */ | |
dc810e39 | 183 | bfd_vma addend; |
252b5132 RH |
184 | |
185 | /* the .got offset for this entry. */ | |
186 | int got_offset; | |
187 | ||
3765b1be RH |
188 | /* How many references to this entry? */ |
189 | int use_count; | |
252b5132 | 190 | |
3765b1be RH |
191 | /* The relocation type of this entry. */ |
192 | unsigned char reloc_type; | |
252b5132 | 193 | |
3765b1be RH |
194 | /* How a LITERAL is used. */ |
195 | unsigned char flags; | |
196 | ||
197 | /* Have we initialized the dynamic relocation for this entry? */ | |
198 | unsigned char reloc_done; | |
199 | ||
200 | /* Have we adjusted this entry for SEC_MERGE? */ | |
201 | unsigned char reloc_xlated; | |
252b5132 RH |
202 | } *got_entries; |
203 | ||
204 | /* used to count non-got, non-plt relocations for delayed sizing | |
205 | of relocation sections. */ | |
206 | struct alpha_elf_reloc_entry | |
207 | { | |
208 | struct alpha_elf_reloc_entry *next; | |
209 | ||
210 | /* which .reloc section? */ | |
211 | asection *srel; | |
212 | ||
213 | /* what kind of relocation? */ | |
fcfbdf31 JJ |
214 | unsigned int rtype; |
215 | ||
216 | /* is this against read-only section? */ | |
217 | unsigned int reltext : 1; | |
252b5132 RH |
218 | |
219 | /* how many did we find? */ | |
220 | unsigned long count; | |
221 | } *reloc_entries; | |
222 | }; | |
223 | ||
224 | /* Alpha ELF linker hash table. */ | |
225 | ||
226 | struct alpha_elf_link_hash_table | |
227 | { | |
228 | struct elf_link_hash_table root; | |
229 | ||
230 | /* The head of a list of .got subsections linked through | |
231 | alpha_elf_tdata(abfd)->got_link_next. */ | |
232 | bfd *got_list; | |
233 | }; | |
234 | ||
235 | /* Look up an entry in a Alpha ELF linker hash table. */ | |
236 | ||
237 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ | |
238 | ((struct alpha_elf_link_hash_entry *) \ | |
239 | elf_link_hash_lookup (&(table)->root, (string), (create), \ | |
240 | (copy), (follow))) | |
241 | ||
242 | /* Traverse a Alpha ELF linker hash table. */ | |
243 | ||
244 | #define alpha_elf_link_hash_traverse(table, func, info) \ | |
245 | (elf_link_hash_traverse \ | |
246 | (&(table)->root, \ | |
247 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ | |
248 | (info))) | |
249 | ||
250 | /* Get the Alpha ELF linker hash table from a link_info structure. */ | |
251 | ||
252 | #define alpha_elf_hash_table(p) \ | |
253 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) | |
254 | ||
255 | /* Get the object's symbols as our own entry type. */ | |
256 | ||
257 | #define alpha_elf_sym_hashes(abfd) \ | |
258 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) | |
259 | ||
260 | /* Should we do dynamic things to this symbol? */ | |
261 | ||
8fb35fed RH |
262 | static int |
263 | alpha_elf_dynamic_symbol_p (h, info) | |
264 | struct elf_link_hash_entry *h; | |
265 | struct bfd_link_info *info; | |
266 | { | |
267 | if (h == NULL) | |
268 | return false; | |
269 | ||
270 | while (h->root.type == bfd_link_hash_indirect | |
271 | || h->root.type == bfd_link_hash_warning) | |
272 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
273 | ||
274 | if (h->dynindx == -1) | |
275 | return false; | |
ca88208a RH |
276 | |
277 | if (h->root.type == bfd_link_hash_undefweak | |
278 | || h->root.type == bfd_link_hash_defweak) | |
279 | return true; | |
280 | ||
2719f880 L |
281 | switch (ELF_ST_VISIBILITY (h->other)) |
282 | { | |
ca88208a RH |
283 | case STV_DEFAULT: |
284 | break; | |
2719f880 | 285 | case STV_HIDDEN: |
ca88208a | 286 | case STV_INTERNAL: |
2719f880 | 287 | return false; |
ca88208a RH |
288 | case STV_PROTECTED: |
289 | if (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
290 | return false; | |
291 | break; | |
2719f880 | 292 | } |
8fb35fed | 293 | |
8fb35fed RH |
294 | if ((info->shared && !info->symbolic) |
295 | || ((h->elf_link_hash_flags | |
296 | & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) | |
297 | == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR))) | |
298 | return true; | |
299 | ||
300 | return false; | |
301 | } | |
252b5132 RH |
302 | |
303 | /* Create an entry in a Alpha ELF linker hash table. */ | |
304 | ||
305 | static struct bfd_hash_entry * | |
306 | elf64_alpha_link_hash_newfunc (entry, table, string) | |
307 | struct bfd_hash_entry *entry; | |
308 | struct bfd_hash_table *table; | |
309 | const char *string; | |
310 | { | |
311 | struct alpha_elf_link_hash_entry *ret = | |
312 | (struct alpha_elf_link_hash_entry *) entry; | |
313 | ||
314 | /* Allocate the structure if it has not already been allocated by a | |
315 | subclass. */ | |
316 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
317 | ret = ((struct alpha_elf_link_hash_entry *) | |
318 | bfd_hash_allocate (table, | |
319 | sizeof (struct alpha_elf_link_hash_entry))); | |
320 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) | |
321 | return (struct bfd_hash_entry *) ret; | |
322 | ||
323 | /* Call the allocation method of the superclass. */ | |
324 | ret = ((struct alpha_elf_link_hash_entry *) | |
325 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
326 | table, string)); | |
327 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) | |
328 | { | |
329 | /* Set local fields. */ | |
330 | memset (&ret->esym, 0, sizeof (EXTR)); | |
331 | /* We use -2 as a marker to indicate that the information has | |
332 | not been set. -1 means there is no associated ifd. */ | |
333 | ret->esym.ifd = -2; | |
334 | ret->flags = 0; | |
335 | ret->got_entries = NULL; | |
336 | ret->reloc_entries = NULL; | |
337 | } | |
338 | ||
339 | return (struct bfd_hash_entry *) ret; | |
340 | } | |
341 | ||
342 | /* Create a Alpha ELF linker hash table. */ | |
343 | ||
344 | static struct bfd_link_hash_table * | |
345 | elf64_alpha_bfd_link_hash_table_create (abfd) | |
346 | bfd *abfd; | |
347 | { | |
348 | struct alpha_elf_link_hash_table *ret; | |
dc810e39 | 349 | bfd_size_type amt = sizeof (struct alpha_elf_link_hash_table); |
252b5132 | 350 | |
e2d34d7d | 351 | ret = (struct alpha_elf_link_hash_table *) bfd_zmalloc (amt); |
252b5132 RH |
352 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
353 | return NULL; | |
354 | ||
355 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, | |
356 | elf64_alpha_link_hash_newfunc)) | |
357 | { | |
e2d34d7d | 358 | free (ret); |
252b5132 RH |
359 | return NULL; |
360 | } | |
361 | ||
362 | return &ret->root.root; | |
363 | } | |
364 | \f | |
365 | /* We have some private fields hanging off of the elf_tdata structure. */ | |
366 | ||
367 | struct alpha_elf_obj_tdata | |
368 | { | |
369 | struct elf_obj_tdata root; | |
370 | ||
371 | /* For every input file, these are the got entries for that object's | |
372 | local symbols. */ | |
373 | struct alpha_elf_got_entry ** local_got_entries; | |
374 | ||
375 | /* For every input file, this is the object that owns the got that | |
376 | this input file uses. */ | |
377 | bfd *gotobj; | |
378 | ||
379 | /* For every got, this is a linked list through the objects using this got */ | |
380 | bfd *in_got_link_next; | |
381 | ||
382 | /* For every got, this is a link to the next got subsegment. */ | |
383 | bfd *got_link_next; | |
384 | ||
385 | /* For every got, this is the section. */ | |
386 | asection *got; | |
387 | ||
3765b1be RH |
388 | /* For every got, this is it's total number of words. */ |
389 | int total_got_size; | |
252b5132 | 390 | |
3765b1be | 391 | /* For every got, this is the sum of the number of words required |
252b5132 | 392 | to hold all of the member object's local got. */ |
3765b1be | 393 | int local_got_size; |
252b5132 RH |
394 | }; |
395 | ||
396 | #define alpha_elf_tdata(abfd) \ | |
397 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) | |
398 | ||
399 | static boolean | |
400 | elf64_alpha_mkobject (abfd) | |
401 | bfd *abfd; | |
402 | { | |
dc810e39 AM |
403 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
404 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
252b5132 RH |
405 | if (abfd->tdata.any == NULL) |
406 | return false; | |
407 | return true; | |
408 | } | |
409 | ||
410 | static boolean | |
411 | elf64_alpha_object_p (abfd) | |
412 | bfd *abfd; | |
413 | { | |
414 | /* Allocate our special target data. */ | |
415 | struct alpha_elf_obj_tdata *new_tdata; | |
dc810e39 AM |
416 | bfd_size_type amt = sizeof (struct alpha_elf_obj_tdata); |
417 | new_tdata = bfd_zalloc (abfd, amt); | |
252b5132 RH |
418 | if (new_tdata == NULL) |
419 | return false; | |
420 | new_tdata->root = *abfd->tdata.elf_obj_data; | |
421 | abfd->tdata.any = new_tdata; | |
422 | ||
423 | /* Set the right machine number for an Alpha ELF file. */ | |
424 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); | |
425 | } | |
426 | \f | |
427 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value | |
428 | from smaller values. Start with zero, widen, *then* decrement. */ | |
429 | #define MINUS_ONE (((bfd_vma)0) - 1) | |
430 | ||
dfe57ca0 RH |
431 | #define SKIP_HOWTO(N) \ |
432 | HOWTO(N, 0, 0, 0, 0, 0, 0, elf64_alpha_reloc_bad, 0, 0, 0, 0, 0) | |
433 | ||
252b5132 RH |
434 | static reloc_howto_type elf64_alpha_howto_table[] = |
435 | { | |
436 | HOWTO (R_ALPHA_NONE, /* type */ | |
437 | 0, /* rightshift */ | |
438 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 8, /* bitsize */ | |
440 | true, /* pc_relative */ | |
441 | 0, /* bitpos */ | |
442 | complain_overflow_dont, /* complain_on_overflow */ | |
443 | elf64_alpha_reloc_nil, /* special_function */ | |
444 | "NONE", /* name */ | |
445 | false, /* partial_inplace */ | |
446 | 0, /* src_mask */ | |
447 | 0, /* dst_mask */ | |
448 | true), /* pcrel_offset */ | |
449 | ||
450 | /* A 32 bit reference to a symbol. */ | |
451 | HOWTO (R_ALPHA_REFLONG, /* type */ | |
452 | 0, /* rightshift */ | |
453 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
454 | 32, /* bitsize */ | |
455 | false, /* pc_relative */ | |
456 | 0, /* bitpos */ | |
457 | complain_overflow_bitfield, /* complain_on_overflow */ | |
458 | 0, /* special_function */ | |
459 | "REFLONG", /* name */ | |
460 | false, /* partial_inplace */ | |
461 | 0xffffffff, /* src_mask */ | |
462 | 0xffffffff, /* dst_mask */ | |
463 | false), /* pcrel_offset */ | |
464 | ||
465 | /* A 64 bit reference to a symbol. */ | |
466 | HOWTO (R_ALPHA_REFQUAD, /* type */ | |
467 | 0, /* rightshift */ | |
468 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
469 | 64, /* bitsize */ | |
470 | false, /* pc_relative */ | |
471 | 0, /* bitpos */ | |
472 | complain_overflow_bitfield, /* complain_on_overflow */ | |
473 | 0, /* special_function */ | |
474 | "REFQUAD", /* name */ | |
475 | false, /* partial_inplace */ | |
476 | MINUS_ONE, /* src_mask */ | |
477 | MINUS_ONE, /* dst_mask */ | |
478 | false), /* pcrel_offset */ | |
479 | ||
480 | /* A 32 bit GP relative offset. This is just like REFLONG except | |
481 | that when the value is used the value of the gp register will be | |
482 | added in. */ | |
483 | HOWTO (R_ALPHA_GPREL32, /* type */ | |
484 | 0, /* rightshift */ | |
485 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
486 | 32, /* bitsize */ | |
487 | false, /* pc_relative */ | |
488 | 0, /* bitpos */ | |
489 | complain_overflow_bitfield, /* complain_on_overflow */ | |
490 | 0, /* special_function */ | |
491 | "GPREL32", /* name */ | |
492 | false, /* partial_inplace */ | |
493 | 0xffffffff, /* src_mask */ | |
494 | 0xffffffff, /* dst_mask */ | |
495 | false), /* pcrel_offset */ | |
496 | ||
497 | /* Used for an instruction that refers to memory off the GP register. */ | |
498 | HOWTO (R_ALPHA_LITERAL, /* type */ | |
499 | 0, /* rightshift */ | |
dfe57ca0 | 500 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
501 | 16, /* bitsize */ |
502 | false, /* pc_relative */ | |
503 | 0, /* bitpos */ | |
504 | complain_overflow_signed, /* complain_on_overflow */ | |
505 | 0, /* special_function */ | |
506 | "ELF_LITERAL", /* name */ | |
507 | false, /* partial_inplace */ | |
508 | 0xffff, /* src_mask */ | |
509 | 0xffff, /* dst_mask */ | |
510 | false), /* pcrel_offset */ | |
511 | ||
512 | /* This reloc only appears immediately following an ELF_LITERAL reloc. | |
513 | It identifies a use of the literal. The symbol index is special: | |
514 | 1 means the literal address is in the base register of a memory | |
515 | format instruction; 2 means the literal address is in the byte | |
516 | offset register of a byte-manipulation instruction; 3 means the | |
517 | literal address is in the target register of a jsr instruction. | |
518 | This does not actually do any relocation. */ | |
519 | HOWTO (R_ALPHA_LITUSE, /* type */ | |
520 | 0, /* rightshift */ | |
dfe57ca0 | 521 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
522 | 32, /* bitsize */ |
523 | false, /* pc_relative */ | |
524 | 0, /* bitpos */ | |
525 | complain_overflow_dont, /* complain_on_overflow */ | |
526 | elf64_alpha_reloc_nil, /* special_function */ | |
527 | "LITUSE", /* name */ | |
528 | false, /* partial_inplace */ | |
529 | 0, /* src_mask */ | |
530 | 0, /* dst_mask */ | |
531 | false), /* pcrel_offset */ | |
532 | ||
533 | /* Load the gp register. This is always used for a ldah instruction | |
534 | which loads the upper 16 bits of the gp register. The symbol | |
535 | index of the GPDISP instruction is an offset in bytes to the lda | |
536 | instruction that loads the lower 16 bits. The value to use for | |
537 | the relocation is the difference between the GP value and the | |
538 | current location; the load will always be done against a register | |
539 | holding the current address. | |
540 | ||
541 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If | |
542 | any offset is present in the instructions, it is an offset from | |
543 | the register to the ldah instruction. This lets us avoid any | |
544 | stupid hackery like inventing a gp value to do partial relocation | |
545 | against. Also unlike ECOFF, we do the whole relocation off of | |
546 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, | |
547 | space consuming bit, that, since all the information was present | |
548 | in the GPDISP_HI16 reloc. */ | |
549 | HOWTO (R_ALPHA_GPDISP, /* type */ | |
550 | 16, /* rightshift */ | |
551 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
552 | 16, /* bitsize */ | |
553 | false, /* pc_relative */ | |
554 | 0, /* bitpos */ | |
555 | complain_overflow_dont, /* complain_on_overflow */ | |
556 | elf64_alpha_reloc_gpdisp, /* special_function */ | |
557 | "GPDISP", /* name */ | |
558 | false, /* partial_inplace */ | |
559 | 0xffff, /* src_mask */ | |
560 | 0xffff, /* dst_mask */ | |
561 | true), /* pcrel_offset */ | |
562 | ||
563 | /* A 21 bit branch. */ | |
564 | HOWTO (R_ALPHA_BRADDR, /* type */ | |
565 | 2, /* rightshift */ | |
566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
567 | 21, /* bitsize */ | |
568 | true, /* pc_relative */ | |
569 | 0, /* bitpos */ | |
570 | complain_overflow_signed, /* complain_on_overflow */ | |
571 | 0, /* special_function */ | |
572 | "BRADDR", /* name */ | |
573 | false, /* partial_inplace */ | |
574 | 0x1fffff, /* src_mask */ | |
575 | 0x1fffff, /* dst_mask */ | |
576 | true), /* pcrel_offset */ | |
577 | ||
578 | /* A hint for a jump to a register. */ | |
579 | HOWTO (R_ALPHA_HINT, /* type */ | |
580 | 2, /* rightshift */ | |
dfe57ca0 | 581 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
582 | 14, /* bitsize */ |
583 | true, /* pc_relative */ | |
584 | 0, /* bitpos */ | |
585 | complain_overflow_dont, /* complain_on_overflow */ | |
586 | 0, /* special_function */ | |
587 | "HINT", /* name */ | |
588 | false, /* partial_inplace */ | |
589 | 0x3fff, /* src_mask */ | |
590 | 0x3fff, /* dst_mask */ | |
591 | true), /* pcrel_offset */ | |
592 | ||
593 | /* 16 bit PC relative offset. */ | |
594 | HOWTO (R_ALPHA_SREL16, /* type */ | |
595 | 0, /* rightshift */ | |
596 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 16, /* bitsize */ | |
598 | true, /* pc_relative */ | |
599 | 0, /* bitpos */ | |
600 | complain_overflow_signed, /* complain_on_overflow */ | |
601 | 0, /* special_function */ | |
602 | "SREL16", /* name */ | |
603 | false, /* partial_inplace */ | |
604 | 0xffff, /* src_mask */ | |
605 | 0xffff, /* dst_mask */ | |
16b65e4e | 606 | true), /* pcrel_offset */ |
252b5132 RH |
607 | |
608 | /* 32 bit PC relative offset. */ | |
609 | HOWTO (R_ALPHA_SREL32, /* type */ | |
610 | 0, /* rightshift */ | |
611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
612 | 32, /* bitsize */ | |
613 | true, /* pc_relative */ | |
614 | 0, /* bitpos */ | |
615 | complain_overflow_signed, /* complain_on_overflow */ | |
616 | 0, /* special_function */ | |
617 | "SREL32", /* name */ | |
618 | false, /* partial_inplace */ | |
619 | 0xffffffff, /* src_mask */ | |
620 | 0xffffffff, /* dst_mask */ | |
16b65e4e | 621 | true), /* pcrel_offset */ |
252b5132 RH |
622 | |
623 | /* A 64 bit PC relative offset. */ | |
624 | HOWTO (R_ALPHA_SREL64, /* type */ | |
625 | 0, /* rightshift */ | |
626 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
627 | 64, /* bitsize */ | |
628 | true, /* pc_relative */ | |
629 | 0, /* bitpos */ | |
630 | complain_overflow_signed, /* complain_on_overflow */ | |
631 | 0, /* special_function */ | |
632 | "SREL64", /* name */ | |
633 | false, /* partial_inplace */ | |
634 | MINUS_ONE, /* src_mask */ | |
635 | MINUS_ONE, /* dst_mask */ | |
16b65e4e | 636 | true), /* pcrel_offset */ |
252b5132 | 637 | |
dfe57ca0 RH |
638 | /* Skip 12 - 16; deprecated ECOFF relocs. */ |
639 | SKIP_HOWTO (12), | |
640 | SKIP_HOWTO (13), | |
641 | SKIP_HOWTO (14), | |
642 | SKIP_HOWTO (15), | |
643 | SKIP_HOWTO (16), | |
252b5132 RH |
644 | |
645 | /* The high 16 bits of the displacement from GP to the target. */ | |
646 | HOWTO (R_ALPHA_GPRELHIGH, | |
647 | 0, /* rightshift */ | |
dfe57ca0 | 648 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
649 | 16, /* bitsize */ |
650 | false, /* pc_relative */ | |
651 | 0, /* bitpos */ | |
652 | complain_overflow_signed, /* complain_on_overflow */ | |
dfe57ca0 | 653 | 0, /* special_function */ |
252b5132 RH |
654 | "GPRELHIGH", /* name */ |
655 | false, /* partial_inplace */ | |
656 | 0xffff, /* src_mask */ | |
657 | 0xffff, /* dst_mask */ | |
658 | false), /* pcrel_offset */ | |
659 | ||
660 | /* The low 16 bits of the displacement from GP to the target. */ | |
661 | HOWTO (R_ALPHA_GPRELLOW, | |
662 | 0, /* rightshift */ | |
dfe57ca0 | 663 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
664 | 16, /* bitsize */ |
665 | false, /* pc_relative */ | |
666 | 0, /* bitpos */ | |
667 | complain_overflow_dont, /* complain_on_overflow */ | |
dfe57ca0 | 668 | 0, /* special_function */ |
252b5132 RH |
669 | "GPRELLOW", /* name */ |
670 | false, /* partial_inplace */ | |
671 | 0xffff, /* src_mask */ | |
672 | 0xffff, /* dst_mask */ | |
673 | false), /* pcrel_offset */ | |
674 | ||
675 | /* A 16-bit displacement from the GP to the target. */ | |
dfe57ca0 | 676 | HOWTO (R_ALPHA_GPREL16, |
252b5132 | 677 | 0, /* rightshift */ |
dfe57ca0 | 678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
252b5132 RH |
679 | 16, /* bitsize */ |
680 | false, /* pc_relative */ | |
681 | 0, /* bitpos */ | |
682 | complain_overflow_signed, /* complain_on_overflow */ | |
683 | 0, /* special_function */ | |
dfe57ca0 | 684 | "GPREL16", /* name */ |
252b5132 RH |
685 | false, /* partial_inplace */ |
686 | 0xffff, /* src_mask */ | |
687 | 0xffff, /* dst_mask */ | |
688 | false), /* pcrel_offset */ | |
689 | ||
dfe57ca0 RH |
690 | /* Skip 20 - 23; deprecated ECOFF relocs. */ |
691 | SKIP_HOWTO (20), | |
692 | SKIP_HOWTO (21), | |
693 | SKIP_HOWTO (22), | |
694 | SKIP_HOWTO (23), | |
252b5132 | 695 | |
fe8bc63d | 696 | /* Misc ELF relocations. */ |
252b5132 RH |
697 | |
698 | /* A dynamic relocation to copy the target into our .dynbss section. */ | |
699 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It | |
700 | is present because every other ELF has one, but should not be used | |
701 | because .dynbss is an ugly thing. */ | |
702 | HOWTO (R_ALPHA_COPY, | |
703 | 0, | |
704 | 0, | |
705 | 0, | |
706 | false, | |
707 | 0, | |
708 | complain_overflow_dont, | |
709 | bfd_elf_generic_reloc, | |
710 | "COPY", | |
711 | false, | |
712 | 0, | |
713 | 0, | |
714 | true), | |
715 | ||
716 | /* A dynamic relocation for a .got entry. */ | |
717 | HOWTO (R_ALPHA_GLOB_DAT, | |
718 | 0, | |
719 | 0, | |
720 | 0, | |
721 | false, | |
722 | 0, | |
723 | complain_overflow_dont, | |
724 | bfd_elf_generic_reloc, | |
725 | "GLOB_DAT", | |
726 | false, | |
727 | 0, | |
728 | 0, | |
729 | true), | |
730 | ||
731 | /* A dynamic relocation for a .plt entry. */ | |
732 | HOWTO (R_ALPHA_JMP_SLOT, | |
733 | 0, | |
734 | 0, | |
735 | 0, | |
736 | false, | |
737 | 0, | |
738 | complain_overflow_dont, | |
739 | bfd_elf_generic_reloc, | |
740 | "JMP_SLOT", | |
741 | false, | |
742 | 0, | |
743 | 0, | |
744 | true), | |
745 | ||
746 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ | |
747 | HOWTO (R_ALPHA_RELATIVE, | |
748 | 0, | |
749 | 0, | |
750 | 0, | |
751 | false, | |
752 | 0, | |
753 | complain_overflow_dont, | |
754 | bfd_elf_generic_reloc, | |
755 | "RELATIVE", | |
756 | false, | |
757 | 0, | |
758 | 0, | |
7793f4d0 RH |
759 | true), |
760 | ||
761 | /* A 21 bit branch that adjusts for gp loads. */ | |
762 | HOWTO (R_ALPHA_BRSGP, /* type */ | |
763 | 2, /* rightshift */ | |
764 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
765 | 21, /* bitsize */ | |
766 | true, /* pc_relative */ | |
767 | 0, /* bitpos */ | |
768 | complain_overflow_signed, /* complain_on_overflow */ | |
769 | 0, /* special_function */ | |
770 | "BRSGP", /* name */ | |
771 | false, /* partial_inplace */ | |
772 | 0x1fffff, /* src_mask */ | |
773 | 0x1fffff, /* dst_mask */ | |
774 | true), /* pcrel_offset */ | |
3765b1be RH |
775 | |
776 | /* Creates a tls_index for the symbol in the got. */ | |
777 | HOWTO (R_ALPHA_TLSGD, /* type */ | |
778 | 0, /* rightshift */ | |
779 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
780 | 16, /* bitsize */ | |
781 | false, /* pc_relative */ | |
782 | 0, /* bitpos */ | |
783 | complain_overflow_signed, /* complain_on_overflow */ | |
784 | 0, /* special_function */ | |
785 | "TLSGD", /* name */ | |
786 | false, /* partial_inplace */ | |
787 | 0xffff, /* src_mask */ | |
788 | 0xffff, /* dst_mask */ | |
789 | false), /* pcrel_offset */ | |
790 | ||
791 | /* Creates a tls_index for the (current) module in the got. */ | |
792 | HOWTO (R_ALPHA_TLSLDM, /* type */ | |
793 | 0, /* rightshift */ | |
794 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
795 | 16, /* bitsize */ | |
796 | false, /* pc_relative */ | |
797 | 0, /* bitpos */ | |
798 | complain_overflow_signed, /* complain_on_overflow */ | |
799 | 0, /* special_function */ | |
800 | "TLSLDM", /* name */ | |
801 | false, /* partial_inplace */ | |
802 | 0xffff, /* src_mask */ | |
803 | 0xffff, /* dst_mask */ | |
804 | false), /* pcrel_offset */ | |
805 | ||
806 | /* A dynamic relocation for a DTP module entry. */ | |
807 | HOWTO (R_ALPHA_DTPMOD64, /* type */ | |
808 | 0, /* rightshift */ | |
809 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
810 | 64, /* bitsize */ | |
811 | false, /* pc_relative */ | |
812 | 0, /* bitpos */ | |
813 | complain_overflow_bitfield, /* complain_on_overflow */ | |
814 | 0, /* special_function */ | |
815 | "DTPMOD64", /* name */ | |
816 | false, /* partial_inplace */ | |
817 | MINUS_ONE, /* src_mask */ | |
818 | MINUS_ONE, /* dst_mask */ | |
819 | false), /* pcrel_offset */ | |
820 | ||
821 | /* Creates a 64-bit offset in the got for the displacement | |
822 | from DTP to the target. */ | |
823 | HOWTO (R_ALPHA_GOTDTPREL, /* type */ | |
824 | 0, /* rightshift */ | |
825 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
826 | 16, /* bitsize */ | |
827 | false, /* pc_relative */ | |
828 | 0, /* bitpos */ | |
829 | complain_overflow_signed, /* complain_on_overflow */ | |
830 | 0, /* special_function */ | |
831 | "GOTDTPREL", /* name */ | |
832 | false, /* partial_inplace */ | |
833 | 0xffff, /* src_mask */ | |
834 | 0xffff, /* dst_mask */ | |
835 | false), /* pcrel_offset */ | |
836 | ||
837 | /* A dynamic relocation for a displacement from DTP to the target. */ | |
838 | HOWTO (R_ALPHA_DTPREL64, /* type */ | |
839 | 0, /* rightshift */ | |
840 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
841 | 64, /* bitsize */ | |
842 | false, /* pc_relative */ | |
843 | 0, /* bitpos */ | |
844 | complain_overflow_bitfield, /* complain_on_overflow */ | |
845 | 0, /* special_function */ | |
846 | "DTPREL64", /* name */ | |
847 | false, /* partial_inplace */ | |
848 | MINUS_ONE, /* src_mask */ | |
849 | MINUS_ONE, /* dst_mask */ | |
850 | false), /* pcrel_offset */ | |
851 | ||
852 | /* The high 16 bits of the displacement from DTP to the target. */ | |
853 | HOWTO (R_ALPHA_DTPRELHI, /* type */ | |
854 | 0, /* rightshift */ | |
855 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
856 | 16, /* bitsize */ | |
857 | false, /* pc_relative */ | |
858 | 0, /* bitpos */ | |
859 | complain_overflow_signed, /* complain_on_overflow */ | |
860 | 0, /* special_function */ | |
861 | "DTPRELHI", /* name */ | |
862 | false, /* partial_inplace */ | |
863 | 0xffff, /* src_mask */ | |
864 | 0xffff, /* dst_mask */ | |
865 | false), /* pcrel_offset */ | |
866 | ||
867 | /* The low 16 bits of the displacement from DTP to the target. */ | |
868 | HOWTO (R_ALPHA_DTPRELLO, /* type */ | |
869 | 0, /* rightshift */ | |
870 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
871 | 16, /* bitsize */ | |
872 | false, /* pc_relative */ | |
873 | 0, /* bitpos */ | |
874 | complain_overflow_dont, /* complain_on_overflow */ | |
875 | 0, /* special_function */ | |
876 | "DTPRELLO", /* name */ | |
877 | false, /* partial_inplace */ | |
878 | 0xffff, /* src_mask */ | |
879 | 0xffff, /* dst_mask */ | |
880 | false), /* pcrel_offset */ | |
881 | ||
882 | /* A 16-bit displacement from DTP to the target. */ | |
883 | HOWTO (R_ALPHA_DTPREL16, /* type */ | |
884 | 0, /* rightshift */ | |
885 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
886 | 16, /* bitsize */ | |
887 | false, /* pc_relative */ | |
888 | 0, /* bitpos */ | |
889 | complain_overflow_signed, /* complain_on_overflow */ | |
890 | 0, /* special_function */ | |
891 | "DTPREL16", /* name */ | |
892 | false, /* partial_inplace */ | |
893 | 0xffff, /* src_mask */ | |
894 | 0xffff, /* dst_mask */ | |
895 | false), /* pcrel_offset */ | |
896 | ||
897 | /* Creates a 64-bit offset in the got for the displacement | |
898 | from TP to the target. */ | |
899 | HOWTO (R_ALPHA_GOTTPREL, /* type */ | |
900 | 0, /* rightshift */ | |
901 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
902 | 16, /* bitsize */ | |
903 | false, /* pc_relative */ | |
904 | 0, /* bitpos */ | |
905 | complain_overflow_signed, /* complain_on_overflow */ | |
906 | 0, /* special_function */ | |
907 | "GOTTPREL", /* name */ | |
908 | false, /* partial_inplace */ | |
909 | 0xffff, /* src_mask */ | |
910 | 0xffff, /* dst_mask */ | |
911 | false), /* pcrel_offset */ | |
912 | ||
913 | /* A dynamic relocation for a displacement from TP to the target. */ | |
914 | HOWTO (R_ALPHA_TPREL64, /* type */ | |
915 | 0, /* rightshift */ | |
916 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
917 | 64, /* bitsize */ | |
918 | false, /* pc_relative */ | |
919 | 0, /* bitpos */ | |
920 | complain_overflow_bitfield, /* complain_on_overflow */ | |
921 | 0, /* special_function */ | |
922 | "TPREL64", /* name */ | |
923 | false, /* partial_inplace */ | |
924 | MINUS_ONE, /* src_mask */ | |
925 | MINUS_ONE, /* dst_mask */ | |
926 | false), /* pcrel_offset */ | |
927 | ||
928 | /* The high 16 bits of the displacement from TP to the target. */ | |
929 | HOWTO (R_ALPHA_TPRELHI, /* type */ | |
930 | 0, /* rightshift */ | |
931 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
932 | 16, /* bitsize */ | |
933 | false, /* pc_relative */ | |
934 | 0, /* bitpos */ | |
935 | complain_overflow_signed, /* complain_on_overflow */ | |
936 | 0, /* special_function */ | |
937 | "TPRELHI", /* name */ | |
938 | false, /* partial_inplace */ | |
939 | 0xffff, /* src_mask */ | |
940 | 0xffff, /* dst_mask */ | |
941 | false), /* pcrel_offset */ | |
942 | ||
943 | /* The low 16 bits of the displacement from TP to the target. */ | |
944 | HOWTO (R_ALPHA_TPRELLO, /* type */ | |
945 | 0, /* rightshift */ | |
946 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
947 | 16, /* bitsize */ | |
948 | false, /* pc_relative */ | |
949 | 0, /* bitpos */ | |
950 | complain_overflow_dont, /* complain_on_overflow */ | |
951 | 0, /* special_function */ | |
952 | "TPRELLO", /* name */ | |
953 | false, /* partial_inplace */ | |
954 | 0xffff, /* src_mask */ | |
955 | 0xffff, /* dst_mask */ | |
956 | false), /* pcrel_offset */ | |
957 | ||
958 | /* A 16-bit displacement from TP to the target. */ | |
959 | HOWTO (R_ALPHA_TPREL16, /* type */ | |
960 | 0, /* rightshift */ | |
961 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
962 | 16, /* bitsize */ | |
963 | false, /* pc_relative */ | |
964 | 0, /* bitpos */ | |
965 | complain_overflow_signed, /* complain_on_overflow */ | |
966 | 0, /* special_function */ | |
967 | "TPREL16", /* name */ | |
968 | false, /* partial_inplace */ | |
969 | 0xffff, /* src_mask */ | |
970 | 0xffff, /* dst_mask */ | |
971 | false), /* pcrel_offset */ | |
252b5132 RH |
972 | }; |
973 | ||
974 | /* A relocation function which doesn't do anything. */ | |
975 | ||
976 | static bfd_reloc_status_type | |
977 | elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
56fc028e | 978 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 979 | arelent *reloc; |
56fc028e AJ |
980 | asymbol *sym ATTRIBUTE_UNUSED; |
981 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
982 | asection *sec; |
983 | bfd *output_bfd; | |
56fc028e | 984 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
985 | { |
986 | if (output_bfd) | |
987 | reloc->address += sec->output_offset; | |
988 | return bfd_reloc_ok; | |
989 | } | |
990 | ||
991 | /* A relocation function used for an unsupported reloc. */ | |
992 | ||
993 | static bfd_reloc_status_type | |
994 | elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message) | |
56fc028e | 995 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 | 996 | arelent *reloc; |
56fc028e AJ |
997 | asymbol *sym ATTRIBUTE_UNUSED; |
998 | PTR data ATTRIBUTE_UNUSED; | |
252b5132 RH |
999 | asection *sec; |
1000 | bfd *output_bfd; | |
56fc028e | 1001 | char **error_message ATTRIBUTE_UNUSED; |
252b5132 RH |
1002 | { |
1003 | if (output_bfd) | |
1004 | reloc->address += sec->output_offset; | |
1005 | return bfd_reloc_notsupported; | |
1006 | } | |
1007 | ||
1008 | /* Do the work of the GPDISP relocation. */ | |
1009 | ||
1010 | static bfd_reloc_status_type | |
1011 | elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda) | |
1012 | bfd *abfd; | |
1013 | bfd_vma gpdisp; | |
1014 | bfd_byte *p_ldah; | |
1015 | bfd_byte *p_lda; | |
1016 | { | |
1017 | bfd_reloc_status_type ret = bfd_reloc_ok; | |
1018 | bfd_vma addend; | |
1019 | unsigned long i_ldah, i_lda; | |
1020 | ||
1021 | i_ldah = bfd_get_32 (abfd, p_ldah); | |
1022 | i_lda = bfd_get_32 (abfd, p_lda); | |
1023 | ||
1024 | /* Complain if the instructions are not correct. */ | |
1025 | if (((i_ldah >> 26) & 0x3f) != 0x09 | |
1026 | || ((i_lda >> 26) & 0x3f) != 0x08) | |
1027 | ret = bfd_reloc_dangerous; | |
1028 | ||
1029 | /* Extract the user-supplied offset, mirroring the sign extensions | |
1030 | that the instructions perform. */ | |
1031 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); | |
1032 | addend = (addend ^ 0x80008000) - 0x80008000; | |
1033 | ||
1034 | gpdisp += addend; | |
1035 | ||
1036 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 | |
1037 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) | |
1038 | ret = bfd_reloc_overflow; | |
1039 | ||
1040 | /* compensate for the sign extension again. */ | |
1041 | i_ldah = ((i_ldah & 0xffff0000) | |
1042 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); | |
1043 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); | |
1044 | ||
dc810e39 AM |
1045 | bfd_put_32 (abfd, (bfd_vma) i_ldah, p_ldah); |
1046 | bfd_put_32 (abfd, (bfd_vma) i_lda, p_lda); | |
252b5132 RH |
1047 | |
1048 | return ret; | |
1049 | } | |
1050 | ||
1051 | /* The special function for the GPDISP reloc. */ | |
1052 | ||
1053 | static bfd_reloc_status_type | |
1054 | elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section, | |
1055 | output_bfd, err_msg) | |
1056 | bfd *abfd; | |
1057 | arelent *reloc_entry; | |
56fc028e | 1058 | asymbol *sym ATTRIBUTE_UNUSED; |
252b5132 RH |
1059 | PTR data; |
1060 | asection *input_section; | |
1061 | bfd *output_bfd; | |
1062 | char **err_msg; | |
1063 | { | |
1064 | bfd_reloc_status_type ret; | |
1065 | bfd_vma gp, relocation; | |
1066 | bfd_byte *p_ldah, *p_lda; | |
1067 | ||
1068 | /* Don't do anything if we're not doing a final link. */ | |
1069 | if (output_bfd) | |
1070 | { | |
1071 | reloc_entry->address += input_section->output_offset; | |
1072 | return bfd_reloc_ok; | |
1073 | } | |
1074 | ||
1075 | if (reloc_entry->address > input_section->_cooked_size || | |
1076 | reloc_entry->address + reloc_entry->addend > input_section->_cooked_size) | |
1077 | return bfd_reloc_outofrange; | |
1078 | ||
1079 | /* The gp used in the portion of the output object to which this | |
1080 | input object belongs is cached on the input bfd. */ | |
1081 | gp = _bfd_get_gp_value (abfd); | |
1082 | ||
1083 | relocation = (input_section->output_section->vma | |
1084 | + input_section->output_offset | |
1085 | + reloc_entry->address); | |
1086 | ||
1087 | p_ldah = (bfd_byte *) data + reloc_entry->address; | |
1088 | p_lda = p_ldah + reloc_entry->addend; | |
1089 | ||
1090 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); | |
1091 | ||
1092 | /* Complain if the instructions are not correct. */ | |
1093 | if (ret == bfd_reloc_dangerous) | |
1094 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); | |
1095 | ||
1096 | return ret; | |
1097 | } | |
1098 | ||
1099 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ | |
1100 | ||
1101 | struct elf_reloc_map | |
1102 | { | |
1103 | bfd_reloc_code_real_type bfd_reloc_val; | |
1104 | int elf_reloc_val; | |
1105 | }; | |
1106 | ||
1107 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = | |
1108 | { | |
dfe57ca0 RH |
1109 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
1110 | {BFD_RELOC_32, R_ALPHA_REFLONG}, | |
1111 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, | |
1112 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, | |
1113 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, | |
1114 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, | |
1115 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, | |
1116 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, | |
1117 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, | |
1118 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, | |
1119 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, | |
1120 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, | |
1121 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, | |
1122 | {BFD_RELOC_ALPHA_GPREL_HI16, R_ALPHA_GPRELHIGH}, | |
1123 | {BFD_RELOC_ALPHA_GPREL_LO16, R_ALPHA_GPRELLOW}, | |
1124 | {BFD_RELOC_GPREL16, R_ALPHA_GPREL16}, | |
7793f4d0 | 1125 | {BFD_RELOC_ALPHA_BRSGP, R_ALPHA_BRSGP}, |
3765b1be RH |
1126 | {BFD_RELOC_ALPHA_TLSGD, R_ALPHA_TLSGD}, |
1127 | {BFD_RELOC_ALPHA_TLSLDM, R_ALPHA_TLSLDM}, | |
1128 | {BFD_RELOC_ALPHA_DTPMOD64, R_ALPHA_DTPMOD64}, | |
1129 | {BFD_RELOC_ALPHA_GOTDTPREL16, R_ALPHA_GOTDTPREL}, | |
1130 | {BFD_RELOC_ALPHA_DTPREL64, R_ALPHA_DTPREL64}, | |
1131 | {BFD_RELOC_ALPHA_DTPREL_HI16, R_ALPHA_DTPRELHI}, | |
1132 | {BFD_RELOC_ALPHA_DTPREL_LO16, R_ALPHA_DTPRELLO}, | |
1133 | {BFD_RELOC_ALPHA_DTPREL16, R_ALPHA_DTPREL16}, | |
1134 | {BFD_RELOC_ALPHA_GOTTPREL16, R_ALPHA_GOTTPREL}, | |
1135 | {BFD_RELOC_ALPHA_TPREL64, R_ALPHA_TPREL64}, | |
1136 | {BFD_RELOC_ALPHA_TPREL_HI16, R_ALPHA_TPRELHI}, | |
1137 | {BFD_RELOC_ALPHA_TPREL_LO16, R_ALPHA_TPRELLO}, | |
1138 | {BFD_RELOC_ALPHA_TPREL16, R_ALPHA_TPREL16}, | |
252b5132 RH |
1139 | }; |
1140 | ||
1141 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
1142 | ||
1143 | static reloc_howto_type * | |
1144 | elf64_alpha_bfd_reloc_type_lookup (abfd, code) | |
56fc028e | 1145 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1146 | bfd_reloc_code_real_type code; |
1147 | { | |
1148 | const struct elf_reloc_map *i, *e; | |
1149 | i = e = elf64_alpha_reloc_map; | |
1150 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); | |
1151 | for (; i != e; ++i) | |
1152 | { | |
1153 | if (i->bfd_reloc_val == code) | |
1154 | return &elf64_alpha_howto_table[i->elf_reloc_val]; | |
1155 | } | |
1156 | return 0; | |
1157 | } | |
1158 | ||
1159 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ | |
1160 | ||
1161 | static void | |
1162 | elf64_alpha_info_to_howto (abfd, cache_ptr, dst) | |
56fc028e | 1163 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
1164 | arelent *cache_ptr; |
1165 | Elf64_Internal_Rela *dst; | |
1166 | { | |
1167 | unsigned r_type; | |
1168 | ||
1169 | r_type = ELF64_R_TYPE(dst->r_info); | |
1170 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); | |
1171 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; | |
1172 | } | |
3765b1be RH |
1173 | |
1174 | /* These two relocations create a two-word entry in the got. */ | |
1175 | #define alpha_got_entry_size(r_type) \ | |
1176 | (r_type == R_ALPHA_TLSGD || r_type == R_ALPHA_TLSLDM ? 16 : 8) | |
9e756d64 RH |
1177 | |
1178 | /* This is PT_TLS segment p_vaddr. */ | |
1179 | #define alpha_get_dtprel_base(tlss) \ | |
1180 | ((tlss)->start) | |
1181 | ||
1182 | /* Main program TLS (whose template starts at PT_TLS p_vaddr) | |
1183 | is assigned offset round(16, PT_TLS p_align). */ | |
1184 | #define alpha_get_tprel_base(tlss) \ | |
1185 | ((tlss)->start - align_power ((bfd_vma) 16, (tlss)->align)) | |
252b5132 | 1186 | \f |
fe8bc63d | 1187 | /* These functions do relaxation for Alpha ELF. |
252b5132 RH |
1188 | |
1189 | Currently I'm only handling what I can do with existing compiler | |
1190 | and assembler support, which means no instructions are removed, | |
1191 | though some may be nopped. At this time GCC does not emit enough | |
1192 | information to do all of the relaxing that is possible. It will | |
1193 | take some not small amount of work for that to happen. | |
1194 | ||
1195 | There are a couple of interesting papers that I once read on this | |
1196 | subject, that I cannot find references to at the moment, that | |
1197 | related to Alpha in particular. They are by David Wall, then of | |
1198 | DEC WRL. */ | |
1199 | ||
1200 | #define OP_LDA 0x08 | |
1201 | #define OP_LDAH 0x09 | |
1202 | #define INSN_JSR 0x68004000 | |
1203 | #define INSN_JSR_MASK 0xfc00c000 | |
1204 | #define OP_LDQ 0x29 | |
1205 | #define OP_BR 0x30 | |
1206 | #define OP_BSR 0x34 | |
f304919d | 1207 | #define INSN_UNOP 0x2ffe0000 |
9e756d64 RH |
1208 | #define INSN_ADDQ 0x40000400 |
1209 | #define INSN_RDUNIQ 0x0000009e | |
252b5132 RH |
1210 | |
1211 | struct alpha_relax_info | |
1212 | { | |
1213 | bfd *abfd; | |
1214 | asection *sec; | |
1215 | bfd_byte *contents; | |
9e756d64 | 1216 | Elf_Internal_Shdr *symtab_hdr; |
252b5132 RH |
1217 | Elf_Internal_Rela *relocs, *relend; |
1218 | struct bfd_link_info *link_info; | |
9e756d64 | 1219 | struct elf_link_tls_segment *tls_segment; |
252b5132 RH |
1220 | bfd_vma gp; |
1221 | bfd *gotobj; | |
1222 | asection *tsec; | |
1223 | struct alpha_elf_link_hash_entry *h; | |
9e756d64 | 1224 | struct alpha_elf_got_entry **first_gotent; |
252b5132 | 1225 | struct alpha_elf_got_entry *gotent; |
9e756d64 RH |
1226 | boolean changed_contents; |
1227 | boolean changed_relocs; | |
252b5132 RH |
1228 | unsigned char other; |
1229 | }; | |
1230 | ||
9e756d64 | 1231 | static boolean elf64_alpha_relax_with_lituse |
fe8bc63d | 1232 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
252b5132 | 1233 | Elf_Internal_Rela *irel)); |
252b5132 RH |
1234 | static bfd_vma elf64_alpha_relax_opt_call |
1235 | PARAMS((struct alpha_relax_info *info, bfd_vma symval)); | |
9e756d64 RH |
1236 | static boolean elf64_alpha_relax_got_load |
1237 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, | |
1238 | Elf_Internal_Rela *irel, unsigned long)); | |
1239 | static boolean elf64_alpha_relax_gprelhilo | |
1240 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, | |
1241 | Elf_Internal_Rela *irel, boolean)); | |
1242 | static boolean elf64_alpha_relax_tls_get_addr | |
1243 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, | |
1244 | Elf_Internal_Rela *irel, boolean)); | |
1245 | static struct elf_link_tls_segment *elf64_alpha_relax_find_tls_segment | |
1246 | PARAMS((struct alpha_relax_info *, struct elf_link_tls_segment *)); | |
252b5132 RH |
1247 | static boolean elf64_alpha_relax_section |
1248 | PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info, | |
1249 | boolean *again)); | |
1250 | ||
1251 | static Elf_Internal_Rela * | |
1252 | elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type) | |
1253 | Elf_Internal_Rela *rel, *relend; | |
1254 | bfd_vma offset; | |
1255 | int type; | |
1256 | { | |
1257 | while (rel < relend) | |
1258 | { | |
52b9d213 AM |
1259 | if (rel->r_offset == offset |
1260 | && ELF64_R_TYPE (rel->r_info) == (unsigned int) type) | |
252b5132 RH |
1261 | return rel; |
1262 | ++rel; | |
1263 | } | |
1264 | return NULL; | |
1265 | } | |
1266 | ||
9e756d64 RH |
1267 | static boolean |
1268 | elf64_alpha_relax_with_lituse (info, symval, irel) | |
252b5132 RH |
1269 | struct alpha_relax_info *info; |
1270 | bfd_vma symval; | |
9e756d64 | 1271 | Elf_Internal_Rela *irel; |
252b5132 | 1272 | { |
9e756d64 | 1273 | Elf_Internal_Rela *urel, *irelend = info->relend; |
252b5132 RH |
1274 | int flags, count, i; |
1275 | bfd_signed_vma disp; | |
1276 | boolean fits16; | |
1277 | boolean fits32; | |
1278 | boolean lit_reused = false; | |
1279 | boolean all_optimized = true; | |
1280 | unsigned int lit_insn; | |
1281 | ||
1282 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1283 | if (lit_insn >> 26 != OP_LDQ) | |
1284 | { | |
1285 | ((*_bfd_error_handler) | |
1286 | ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", | |
8f615d07 AM |
1287 | bfd_archive_filename (info->abfd), info->sec->name, |
1288 | (unsigned long) irel->r_offset)); | |
9e756d64 | 1289 | return true; |
252b5132 RH |
1290 | } |
1291 | ||
9e756d64 RH |
1292 | /* Can't relax dynamic symbols. */ |
1293 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
1294 | return true; | |
1295 | ||
252b5132 RH |
1296 | /* Summarize how this particular LITERAL is used. */ |
1297 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) | |
1298 | { | |
1299 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) | |
1300 | break; | |
1e738b87 | 1301 | if (urel->r_addend <= 3) |
252b5132 RH |
1302 | flags |= 1 << urel->r_addend; |
1303 | } | |
1304 | ||
fe8bc63d | 1305 | /* A little preparation for the loop... */ |
252b5132 | 1306 | disp = symval - info->gp; |
252b5132 RH |
1307 | |
1308 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) | |
1309 | { | |
1310 | unsigned int insn; | |
ffcb7aff NC |
1311 | int insn_disp; |
1312 | bfd_signed_vma xdisp; | |
1313 | ||
252b5132 RH |
1314 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
1315 | ||
1316 | switch (urel->r_addend) | |
1317 | { | |
9e756d64 RH |
1318 | case LITUSE_ALPHA_ADDR: |
1319 | default: | |
252b5132 RH |
1320 | /* This type is really just a placeholder to note that all |
1321 | uses cannot be optimized, but to still allow some. */ | |
1322 | all_optimized = false; | |
1323 | break; | |
1324 | ||
9e756d64 | 1325 | case LITUSE_ALPHA_BASE: |
252b5132 | 1326 | /* We can always optimize 16-bit displacements. */ |
ffcb7aff NC |
1327 | |
1328 | /* Extract the displacement from the instruction, sign-extending | |
1329 | it if necessary, then test whether it is within 16 or 32 bits | |
1330 | displacement from GP. */ | |
1331 | insn_disp = insn & 0x0000ffff; | |
9e756d64 RH |
1332 | if (insn_disp & 0x8000) |
1333 | insn_disp |= ~0xffff; /* Negative: sign-extend. */ | |
ffcb7aff NC |
1334 | |
1335 | xdisp = disp + insn_disp; | |
9e756d64 RH |
1336 | fits16 = (xdisp >= - (bfd_signed_vma) 0x8000 && xdisp < 0x8000); |
1337 | fits32 = (xdisp >= - (bfd_signed_vma) 0x80000000 | |
1338 | && xdisp < 0x7fff8000); | |
ffcb7aff | 1339 | |
252b5132 RH |
1340 | if (fits16) |
1341 | { | |
ffcb7aff | 1342 | /* Take the op code and dest from this insn, take the base |
fe8bc63d | 1343 | register from the literal insn. Leave the offset alone. */ |
ffcb7aff | 1344 | insn = (insn & 0xffe0ffff) | (lit_insn & 0x001f0000); |
252b5132 | 1345 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
dfe57ca0 | 1346 | R_ALPHA_GPREL16); |
252b5132 RH |
1347 | urel->r_addend = irel->r_addend; |
1348 | info->changed_relocs = true; | |
1349 | ||
dc810e39 AM |
1350 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1351 | info->contents + urel->r_offset); | |
252b5132 RH |
1352 | info->changed_contents = true; |
1353 | } | |
1354 | ||
1355 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ | |
1356 | else if (fits32 && !(flags & ~6)) | |
1357 | { | |
ffcb7aff | 1358 | /* FIXME: sanity check that lit insn Ra is mem insn Rb. */ |
252b5132 RH |
1359 | |
1360 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1361 | R_ALPHA_GPRELHIGH); | |
1362 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); | |
dc810e39 | 1363 | bfd_put_32 (info->abfd, (bfd_vma) lit_insn, |
252b5132 RH |
1364 | info->contents + irel->r_offset); |
1365 | lit_reused = true; | |
1366 | info->changed_contents = true; | |
1367 | ||
1368 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1369 | R_ALPHA_GPRELLOW); | |
1370 | urel->r_addend = irel->r_addend; | |
1371 | info->changed_relocs = true; | |
1372 | } | |
1373 | else | |
1374 | all_optimized = false; | |
1375 | break; | |
1376 | ||
9e756d64 | 1377 | case LITUSE_ALPHA_BYTOFF: |
252b5132 RH |
1378 | /* We can always optimize byte instructions. */ |
1379 | ||
1380 | /* FIXME: sanity check the insn for byte op. Check that the | |
1381 | literal dest reg is indeed Rb in the byte insn. */ | |
1382 | ||
dc810e39 AM |
1383 | insn &= ~ (unsigned) 0x001ff000; |
1384 | insn |= ((symval & 7) << 13) | 0x1000; | |
252b5132 RH |
1385 | |
1386 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1387 | urel->r_addend = 0; | |
1388 | info->changed_relocs = true; | |
1389 | ||
dc810e39 AM |
1390 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1391 | info->contents + urel->r_offset); | |
252b5132 RH |
1392 | info->changed_contents = true; |
1393 | break; | |
1394 | ||
9e756d64 RH |
1395 | case LITUSE_ALPHA_JSR: |
1396 | case LITUSE_ALPHA_TLSGD: | |
1397 | case LITUSE_ALPHA_TLSLDM: | |
252b5132 | 1398 | { |
f44f99a5 | 1399 | bfd_vma optdest, org; |
252b5132 RH |
1400 | bfd_signed_vma odisp; |
1401 | ||
f44f99a5 RH |
1402 | /* If this symbol is undefined, we can't relax it to a branch. */ |
1403 | if (info->h | |
1404 | && (info->h->root.root.type == bfd_link_hash_undefweak | |
1405 | || info->h->root.root.type == bfd_link_hash_undefined)) | |
1406 | { | |
1407 | all_optimized = false; | |
1408 | break; | |
1409 | } | |
1410 | ||
1411 | /* If not zero, place to jump without needing pv. */ | |
1412 | optdest = elf64_alpha_relax_opt_call (info, symval); | |
1413 | org = (info->sec->output_section->vma | |
1414 | + info->sec->output_offset | |
1415 | + urel->r_offset + 4); | |
252b5132 | 1416 | odisp = (optdest ? optdest : symval) - org; |
f44f99a5 | 1417 | |
252b5132 RH |
1418 | if (odisp >= -0x400000 && odisp < 0x400000) |
1419 | { | |
1420 | Elf_Internal_Rela *xrel; | |
1421 | ||
fe8bc63d | 1422 | /* Preserve branch prediction call stack when possible. */ |
252b5132 RH |
1423 | if ((insn & INSN_JSR_MASK) == INSN_JSR) |
1424 | insn = (OP_BSR << 26) | (insn & 0x03e00000); | |
1425 | else | |
1426 | insn = (OP_BR << 26) | (insn & 0x03e00000); | |
fe8bc63d | 1427 | |
252b5132 RH |
1428 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
1429 | R_ALPHA_BRADDR); | |
1430 | urel->r_addend = irel->r_addend; | |
1431 | ||
1432 | if (optdest) | |
1433 | urel->r_addend += optdest - symval; | |
1434 | else | |
1435 | all_optimized = false; | |
1436 | ||
dc810e39 AM |
1437 | bfd_put_32 (info->abfd, (bfd_vma) insn, |
1438 | info->contents + urel->r_offset); | |
252b5132 RH |
1439 | |
1440 | /* Kill any HINT reloc that might exist for this insn. */ | |
1441 | xrel = (elf64_alpha_find_reloc_at_ofs | |
fe8bc63d | 1442 | (info->relocs, info->relend, urel->r_offset, |
252b5132 RH |
1443 | R_ALPHA_HINT)); |
1444 | if (xrel) | |
1445 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1446 | ||
1447 | info->changed_contents = true; | |
1448 | info->changed_relocs = true; | |
1449 | } | |
1450 | else | |
1451 | all_optimized = false; | |
1452 | ||
1cd6895c RH |
1453 | /* Even if the target is not in range for a direct branch, |
1454 | if we share a GP, we can eliminate the gp reload. */ | |
1455 | if (optdest) | |
1456 | { | |
1457 | Elf_Internal_Rela *gpdisp | |
1458 | = (elf64_alpha_find_reloc_at_ofs | |
9e756d64 RH |
1459 | (info->relocs, irelend, urel->r_offset + 4, |
1460 | R_ALPHA_GPDISP)); | |
1cd6895c RH |
1461 | if (gpdisp) |
1462 | { | |
1463 | bfd_byte *p_ldah = info->contents + gpdisp->r_offset; | |
1464 | bfd_byte *p_lda = p_ldah + gpdisp->r_addend; | |
1465 | unsigned int ldah = bfd_get_32 (info->abfd, p_ldah); | |
1466 | unsigned int lda = bfd_get_32 (info->abfd, p_lda); | |
1467 | ||
1468 | /* Verify that the instruction is "ldah $29,0($26)". | |
1469 | Consider a function that ends in a noreturn call, | |
1470 | and that the next function begins with an ldgp, | |
1471 | and that by accident there is no padding between. | |
1472 | In that case the insn would use $27 as the base. */ | |
1473 | if (ldah == 0x27ba0000 && lda == 0x23bd0000) | |
1474 | { | |
dc810e39 AM |
1475 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_ldah); |
1476 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, p_lda); | |
1cd6895c RH |
1477 | |
1478 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1479 | info->changed_contents = true; | |
1480 | info->changed_relocs = true; | |
1481 | } | |
1482 | } | |
1483 | } | |
252b5132 RH |
1484 | } |
1485 | break; | |
1486 | } | |
1487 | } | |
1488 | ||
1489 | /* If all cases were optimized, we can reduce the use count on this | |
1490 | got entry by one, possibly eliminating it. */ | |
1491 | if (all_optimized) | |
1492 | { | |
3765b1be RH |
1493 | if (--info->gotent->use_count == 0) |
1494 | { | |
9e756d64 RH |
1495 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); |
1496 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3765b1be | 1497 | if (!info->h) |
9e756d64 | 1498 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; |
3765b1be | 1499 | } |
252b5132 RH |
1500 | |
1501 | /* If the literal instruction is no longer needed (it may have been | |
3765b1be RH |
1502 | reused. We can eliminate it. */ |
1503 | /* ??? For now, I don't want to deal with compacting the section, | |
252b5132 RH |
1504 | so just nop it out. */ |
1505 | if (!lit_reused) | |
1506 | { | |
1507 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1508 | info->changed_relocs = true; | |
1509 | ||
dc810e39 AM |
1510 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, |
1511 | info->contents + irel->r_offset); | |
252b5132 RH |
1512 | info->changed_contents = true; |
1513 | } | |
1514 | } | |
1515 | ||
9e756d64 | 1516 | return true; |
252b5132 RH |
1517 | } |
1518 | ||
1519 | static bfd_vma | |
1520 | elf64_alpha_relax_opt_call (info, symval) | |
1521 | struct alpha_relax_info *info; | |
1522 | bfd_vma symval; | |
1523 | { | |
1524 | /* If the function has the same gp, and we can identify that the | |
1525 | function does not use its function pointer, we can eliminate the | |
1526 | address load. */ | |
1527 | ||
1528 | /* If the symbol is marked NOPV, we are being told the function never | |
1529 | needs its procedure value. */ | |
c810873d | 1530 | if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_NOPV) |
252b5132 RH |
1531 | return symval; |
1532 | ||
1533 | /* If the symbol is marked STD_GP, we are being told the function does | |
fe8bc63d | 1534 | a normal ldgp in the first two words. */ |
c810873d | 1535 | else if ((info->other & STO_ALPHA_STD_GPLOAD) == STO_ALPHA_STD_GPLOAD) |
252b5132 RH |
1536 | ; |
1537 | ||
1538 | /* Otherwise, we may be able to identify a GP load in the first two | |
1539 | words, which we can then skip. */ | |
fe8bc63d | 1540 | else |
252b5132 RH |
1541 | { |
1542 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; | |
1543 | bfd_vma ofs; | |
1544 | ||
fe8bc63d | 1545 | /* Load the relocations from the section that the target symbol is in. */ |
252b5132 RH |
1546 | if (info->sec == info->tsec) |
1547 | { | |
1548 | tsec_relocs = info->relocs; | |
1549 | tsec_relend = info->relend; | |
1550 | tsec_free = NULL; | |
1551 | } | |
1552 | else | |
1553 | { | |
1554 | tsec_relocs = (_bfd_elf64_link_read_relocs | |
1555 | (info->abfd, info->tsec, (PTR) NULL, | |
1556 | (Elf_Internal_Rela *) NULL, | |
1557 | info->link_info->keep_memory)); | |
1558 | if (tsec_relocs == NULL) | |
1559 | return 0; | |
1560 | tsec_relend = tsec_relocs + info->tsec->reloc_count; | |
1561 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); | |
1562 | } | |
1563 | ||
1564 | /* Recover the symbol's offset within the section. */ | |
1565 | ofs = (symval - info->tsec->output_section->vma | |
1566 | - info->tsec->output_offset); | |
fe8bc63d | 1567 | |
252b5132 RH |
1568 | /* Look for a GPDISP reloc. */ |
1569 | gpdisp = (elf64_alpha_find_reloc_at_ofs | |
1570 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); | |
1571 | ||
1572 | if (!gpdisp || gpdisp->r_addend != 4) | |
1573 | { | |
1574 | if (tsec_free) | |
1575 | free (tsec_free); | |
1576 | return 0; | |
1577 | } | |
1578 | if (tsec_free) | |
1579 | free (tsec_free); | |
1580 | } | |
1581 | ||
fe8bc63d | 1582 | /* We've now determined that we can skip an initial gp load. Verify |
252b5132 RH |
1583 | that the call and the target use the same gp. */ |
1584 | if (info->link_info->hash->creator != info->tsec->owner->xvec | |
1585 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) | |
1586 | return 0; | |
1587 | ||
1588 | return symval + 8; | |
1589 | } | |
1590 | ||
1591 | static boolean | |
9e756d64 | 1592 | elf64_alpha_relax_got_load (info, symval, irel, r_type) |
252b5132 RH |
1593 | struct alpha_relax_info *info; |
1594 | bfd_vma symval; | |
1595 | Elf_Internal_Rela *irel; | |
9e756d64 | 1596 | unsigned long r_type; |
252b5132 RH |
1597 | { |
1598 | unsigned int insn; | |
1599 | bfd_signed_vma disp; | |
1600 | ||
1601 | /* Get the instruction. */ | |
1602 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); | |
1603 | ||
1604 | if (insn >> 26 != OP_LDQ) | |
1605 | { | |
9e756d64 | 1606 | reloc_howto_type *howto = elf64_alpha_howto_table + r_type; |
252b5132 | 1607 | ((*_bfd_error_handler) |
9e756d64 | 1608 | ("%s: %s+0x%lx: warning: %s relocation against unexpected insn", |
8f615d07 | 1609 | bfd_archive_filename (info->abfd), info->sec->name, |
9e756d64 | 1610 | (unsigned long) irel->r_offset, howto->name)); |
252b5132 RH |
1611 | return true; |
1612 | } | |
1613 | ||
9e756d64 RH |
1614 | /* Can't relax dynamic symbols. */ |
1615 | if (alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info)) | |
1616 | return true; | |
252b5132 | 1617 | |
9e756d64 RH |
1618 | /* Can't use local-exec relocations in shared libraries. */ |
1619 | if (r_type == R_ALPHA_GOTTPREL && info->link_info->shared) | |
252b5132 RH |
1620 | return true; |
1621 | ||
9e756d64 RH |
1622 | if (r_type == R_ALPHA_LITERAL) |
1623 | disp = symval - info->gp; | |
1624 | else | |
1625 | { | |
1626 | bfd_vma dtp_base, tp_base; | |
1627 | ||
1628 | BFD_ASSERT (info->tls_segment != NULL); | |
1629 | dtp_base = alpha_get_dtprel_base (info->tls_segment); | |
1630 | tp_base = alpha_get_tprel_base (info->tls_segment); | |
1631 | disp = symval - (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
1632 | } | |
252b5132 | 1633 | |
9e756d64 RH |
1634 | if (disp < -0x8000 || disp >= 0x8000) |
1635 | return true; | |
1636 | ||
1637 | /* Exchange LDQ for LDA. In the case of the TLS relocs, we're loading | |
1638 | a constant, so force the base register to be $31. */ | |
1639 | if (r_type == R_ALPHA_LITERAL) | |
1640 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); | |
1641 | else | |
1642 | insn = (OP_LDA << 26) | (insn & (31 << 21)) | (31 << 16); | |
dc810e39 | 1643 | bfd_put_32 (info->abfd, (bfd_vma) insn, info->contents + irel->r_offset); |
252b5132 | 1644 | info->changed_contents = true; |
9e756d64 RH |
1645 | |
1646 | switch (r_type) | |
1647 | { | |
1648 | case R_ALPHA_LITERAL: | |
1649 | r_type = R_ALPHA_GPREL16; | |
1650 | break; | |
1651 | case R_ALPHA_GOTDTPREL: | |
1652 | r_type = R_ALPHA_DTPREL16; | |
1653 | break; | |
1654 | case R_ALPHA_GOTTPREL: | |
1655 | r_type = R_ALPHA_TPREL16; | |
1656 | break; | |
1657 | default: | |
1658 | BFD_ASSERT (0); | |
1659 | return false; | |
1660 | } | |
252b5132 | 1661 | |
9e756d64 | 1662 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), r_type); |
252b5132 RH |
1663 | info->changed_relocs = true; |
1664 | ||
1665 | /* Reduce the use count on this got entry by one, possibly | |
1666 | eliminating it. */ | |
3765b1be RH |
1667 | if (--info->gotent->use_count == 0) |
1668 | { | |
9e756d64 RH |
1669 | int sz = alpha_got_entry_size (r_type); |
1670 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
3765b1be | 1671 | if (!info->h) |
9e756d64 | 1672 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; |
3765b1be | 1673 | } |
252b5132 RH |
1674 | |
1675 | /* ??? Search forward through this basic block looking for insns | |
1676 | that use the target register. Stop after an insn modifying the | |
1677 | register is seen, or after a branch or call. | |
1678 | ||
1679 | Any such memory load insn may be substituted by a load directly | |
1680 | off the GP. This allows the memory load insn to be issued before | |
fe8bc63d | 1681 | the calculated GP register would otherwise be ready. |
252b5132 RH |
1682 | |
1683 | Any such jsr insn can be replaced by a bsr if it is in range. | |
1684 | ||
1685 | This would mean that we'd have to _add_ relocations, the pain of | |
1686 | which gives one pause. */ | |
1687 | ||
1688 | return true; | |
1689 | } | |
1690 | ||
9e756d64 RH |
1691 | static boolean |
1692 | elf64_alpha_relax_gprelhilo (info, symval, irel, hi) | |
1693 | struct alpha_relax_info *info; | |
1694 | bfd_vma symval; | |
1695 | Elf_Internal_Rela *irel; | |
1696 | boolean hi; | |
1697 | { | |
1698 | unsigned int insn; | |
1699 | bfd_signed_vma disp; | |
1700 | bfd_byte *pos = info->contents + irel->r_offset; | |
1701 | ||
1702 | /* ??? This assumes that the compiler doesn't render | |
1703 | ||
1704 | array[i] | |
1705 | as | |
1706 | ldah t, array(gp) !gprelhigh | |
1707 | s8addl i, t, t | |
1708 | ldq r, array(t) !gprellow | |
1709 | ||
1710 | which would indeed be the most efficient way to implement this. */ | |
1711 | ||
1712 | return true; | |
1713 | ||
1714 | disp = symval - info->gp; | |
1715 | if (disp < -0x8000 || disp >= 0x8000) | |
1716 | return true; | |
1717 | ||
1718 | if (hi) | |
1719 | { | |
1720 | /* Nop out the high instruction. */ | |
1721 | ||
1722 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos); | |
1723 | info->changed_contents = true; | |
1724 | ||
1725 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1726 | irel->r_addend = 0; | |
1727 | info->changed_relocs = true; | |
1728 | } | |
1729 | else | |
1730 | { | |
1731 | /* Adjust the low instruction to reference GP directly. */ | |
1732 | ||
1733 | insn = bfd_get_32 (info->abfd, pos); | |
1734 | insn = (insn & 0xffe00000) | (29 << 16); | |
1735 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos); | |
1736 | info->changed_contents = true; | |
1737 | ||
1738 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1739 | R_ALPHA_GPREL16); | |
1740 | info->changed_relocs = true; | |
1741 | } | |
1742 | ||
1743 | return true; | |
1744 | } | |
1745 | ||
1746 | static boolean | |
1747 | elf64_alpha_relax_tls_get_addr (info, symval, irel, is_gd) | |
1748 | struct alpha_relax_info *info; | |
1749 | bfd_vma symval; | |
1750 | Elf_Internal_Rela *irel; | |
1751 | boolean is_gd; | |
1752 | { | |
1753 | bfd_byte *pos[5]; | |
1754 | unsigned int insn; | |
1755 | Elf_Internal_Rela *gpdisp, *hint; | |
1756 | boolean dynamic, use_gottprel; | |
1757 | ||
1758 | dynamic = alpha_elf_dynamic_symbol_p (&info->h->root, info->link_info); | |
1759 | ||
1760 | /* ??? For LD relaxation, we need a symbol referencing the beginning | |
1761 | of the TLS segment. */ | |
1762 | if (!is_gd) | |
1763 | return true; | |
1764 | ||
1765 | /* If a TLS symbol is accessed using IE at least once, there is no point | |
1766 | to use dynamic model for it. */ | |
1767 | if (is_gd && info->h && (info->h->flags & ALPHA_ELF_LINK_HASH_TLS_IE)) | |
1768 | ; | |
1769 | ||
1770 | /* If the symbol is local, and we've already committed to DF_STATIC_TLS, | |
1771 | then we might as well relax to IE. */ | |
1772 | else if (info->link_info->shared && !dynamic | |
1773 | && (info->link_info->flags & DF_STATIC_TLS)) | |
1774 | ; | |
1775 | ||
1776 | /* Otherwise we must be building an executable to do anything. */ | |
1777 | else if (info->link_info->shared) | |
1778 | return true; | |
1779 | ||
1780 | /* The TLSGD/TLSLDM relocation must be followed by a LITERAL and | |
1781 | the matching LITUSE_TLS relocations. */ | |
1782 | if (irel + 2 >= info->relend) | |
1783 | return true; | |
1784 | if (ELF64_R_TYPE (irel[1].r_info) != R_ALPHA_LITERAL | |
1785 | || ELF64_R_TYPE (irel[2].r_info) != R_ALPHA_LITUSE | |
1786 | || irel[2].r_addend != (is_gd ? LITUSE_ALPHA_TLSGD : LITUSE_ALPHA_TLSLDM)) | |
1787 | return true; | |
1788 | ||
1789 | /* There must be a GPDISP relocation positioned immediately after the | |
1790 | LITUSE relocation. */ | |
1791 | gpdisp = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
1792 | irel[2].r_offset + 4, R_ALPHA_GPDISP); | |
1793 | if (!gpdisp) | |
1794 | return true; | |
1795 | ||
1796 | pos[0] = info->contents + irel[0].r_offset; | |
1797 | pos[1] = info->contents + irel[1].r_offset; | |
1798 | pos[2] = info->contents + irel[2].r_offset; | |
1799 | pos[3] = info->contents + gpdisp->r_offset; | |
1800 | pos[4] = pos[3] + gpdisp->r_addend; | |
1801 | ||
1802 | /* Only positions 0 and 1 are allowed to be out of order. */ | |
1803 | if (pos[1] < pos[0]) | |
1804 | { | |
1805 | bfd_byte *tmp = pos[0]; | |
1806 | pos[0] = pos[1]; | |
1807 | pos[1] = tmp; | |
1808 | } | |
1809 | if (pos[1] >= pos[2] || pos[2] >= pos[3] || pos[3] >= pos[4]) | |
1810 | return true; | |
1811 | ||
1812 | /* Reduce the use count on the LITERAL relocation. Do this before we | |
1813 | smash the symndx when we adjust the relocations below. */ | |
1814 | { | |
1815 | struct alpha_elf_got_entry *lit_gotent; | |
1816 | struct alpha_elf_link_hash_entry *lit_h; | |
1817 | unsigned long indx; | |
1818 | ||
1819 | BFD_ASSERT (ELF64_R_SYM (irel[1].r_info) >= info->symtab_hdr->sh_info); | |
1820 | indx = ELF64_R_SYM (irel[1].r_info) - info->symtab_hdr->sh_info; | |
1821 | lit_h = alpha_elf_sym_hashes (info->abfd)[indx]; | |
1822 | ||
1823 | while (lit_h->root.root.type == bfd_link_hash_indirect | |
1824 | || lit_h->root.root.type == bfd_link_hash_warning) | |
1825 | lit_h = (struct alpha_elf_link_hash_entry *) lit_h->root.root.u.i.link; | |
1826 | ||
1827 | for (lit_gotent = lit_h->got_entries; lit_gotent ; | |
1828 | lit_gotent = lit_gotent->next) | |
1829 | if (lit_gotent->gotobj == info->gotobj | |
1830 | && lit_gotent->reloc_type == R_ALPHA_LITERAL | |
1831 | && lit_gotent->addend == irel[1].r_addend) | |
1832 | break; | |
1833 | BFD_ASSERT (lit_gotent); | |
1834 | ||
1835 | if (--lit_gotent->use_count == 0) | |
1836 | { | |
1837 | int sz = alpha_got_entry_size (R_ALPHA_LITERAL); | |
1838 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
1839 | } | |
1840 | } | |
1841 | ||
1842 | /* Change | |
1843 | ||
1844 | lda $16,x($gp) !tlsgd!1 | |
1845 | ldq $27,__tls_get_addr($gp) !literal!1 | |
1846 | jsr $26,($27)__tls_get_addr !lituse_tlsgd!1 | |
1847 | ldah $29,0($26) !gpdisp!2 | |
1848 | lda $29,0($29) !gpdisp!2 | |
1849 | to | |
1850 | ldq $16,x($gp) !gottprel | |
1851 | unop | |
1852 | call_pal rduniq | |
1853 | addq $16,$0,$0 | |
1854 | unop | |
1855 | or the first pair to | |
1856 | lda $16,x($gp) !tprel | |
1857 | unop | |
1858 | or | |
1859 | ldah $16,x($gp) !tprelhi | |
1860 | lda $16,x($16) !tprello | |
1861 | ||
1862 | as appropriate. */ | |
1863 | ||
1864 | use_gottprel = false; | |
1865 | switch (!dynamic && !info->link_info->shared) | |
1866 | { | |
1867 | case 1: | |
1868 | { | |
1869 | bfd_vma tp_base; | |
1870 | bfd_signed_vma disp; | |
1871 | ||
1872 | BFD_ASSERT (info->tls_segment != NULL); | |
1873 | tp_base = alpha_get_tprel_base (info->tls_segment); | |
1874 | disp = symval - tp_base; | |
1875 | ||
1876 | if (disp >= -0x8000 && disp < 0x8000) | |
1877 | { | |
1878 | insn = (OP_LDA << 26) | (16 << 21) | (31 << 16); | |
1879 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1880 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
1881 | ||
1882 | irel[0].r_offset = pos[0] - info->contents; | |
1883 | irel[0].r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1884 | R_ALPHA_TPREL16); | |
1885 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1886 | break; | |
1887 | } | |
1888 | else if (disp >= -(bfd_signed_vma) 0x80000000 | |
1889 | && disp < (bfd_signed_vma) 0x7fff8000) | |
1890 | { | |
1891 | insn = (OP_LDAH << 26) | (16 << 21) | (31 << 16); | |
1892 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1893 | insn = (OP_LDA << 26) | (16 << 21) | (16 << 16); | |
1894 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[1]); | |
1895 | ||
1896 | irel[0].r_offset = pos[0] - info->contents; | |
1897 | irel[0].r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1898 | R_ALPHA_TPRELHI); | |
1899 | irel[1].r_offset = pos[1] - info->contents; | |
1900 | irel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1901 | R_ALPHA_TPRELLO); | |
1902 | break; | |
1903 | } | |
1904 | } | |
1905 | /* FALLTHRU */ | |
1906 | ||
1907 | default: | |
1908 | use_gottprel = true; | |
1909 | ||
1910 | insn = (OP_LDQ << 26) | (16 << 21) | (29 << 16); | |
1911 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[0]); | |
1912 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[1]); | |
1913 | ||
1914 | irel[0].r_offset = pos[0] - info->contents; | |
1915 | irel[0].r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), | |
1916 | R_ALPHA_GOTTPREL); | |
1917 | irel[1].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1918 | break; | |
1919 | } | |
1920 | ||
1921 | bfd_put_32 (info->abfd, (bfd_vma) INSN_RDUNIQ, pos[2]); | |
1922 | ||
1923 | insn = INSN_ADDQ | (16 << 21) | (0 << 16) | (0 << 0); | |
1924 | bfd_put_32 (info->abfd, (bfd_vma) insn, pos[3]); | |
1925 | ||
1926 | bfd_put_32 (info->abfd, (bfd_vma) INSN_UNOP, pos[4]); | |
1927 | ||
1928 | irel[2].r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1929 | gpdisp->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1930 | ||
1931 | hint = elf64_alpha_find_reloc_at_ofs (info->relocs, info->relend, | |
1932 | irel[2].r_offset, R_ALPHA_HINT); | |
1933 | if (hint) | |
1934 | hint->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); | |
1935 | ||
1936 | info->changed_contents = true; | |
1937 | info->changed_relocs = true; | |
1938 | ||
1939 | /* Reduce the use count on the TLSGD/TLSLDM relocation. */ | |
1940 | if (--info->gotent->use_count == 0) | |
1941 | { | |
1942 | int sz = alpha_got_entry_size (info->gotent->reloc_type); | |
1943 | alpha_elf_tdata (info->gotobj)->total_got_size -= sz; | |
1944 | if (!info->h) | |
1945 | alpha_elf_tdata (info->gotobj)->local_got_size -= sz; | |
1946 | } | |
1947 | ||
1948 | /* If we've switched to a GOTTPREL relocation, increment the reference | |
1949 | count on that got entry. */ | |
1950 | if (use_gottprel) | |
1951 | { | |
1952 | struct alpha_elf_got_entry *tprel_gotent; | |
1953 | ||
1954 | for (tprel_gotent = *info->first_gotent; tprel_gotent ; | |
1955 | tprel_gotent = tprel_gotent->next) | |
1956 | if (tprel_gotent->gotobj == info->gotobj | |
1957 | && tprel_gotent->reloc_type == R_ALPHA_GOTTPREL | |
1958 | && tprel_gotent->addend == irel->r_addend) | |
1959 | break; | |
1960 | if (tprel_gotent) | |
1961 | tprel_gotent->use_count++; | |
1962 | else | |
1963 | { | |
1964 | if (info->gotent->use_count == 0) | |
1965 | tprel_gotent = info->gotent; | |
1966 | else | |
1967 | { | |
1968 | tprel_gotent = (struct alpha_elf_got_entry *) | |
1969 | bfd_alloc (info->abfd, sizeof (struct alpha_elf_got_entry)); | |
1970 | if (!tprel_gotent) | |
1971 | return false; | |
1972 | ||
1973 | tprel_gotent->next = *info->first_gotent; | |
1974 | *info->first_gotent = tprel_gotent; | |
1975 | ||
1976 | tprel_gotent->gotobj = info->gotobj; | |
1977 | tprel_gotent->addend = irel->r_addend; | |
1978 | tprel_gotent->got_offset = -1; | |
1979 | tprel_gotent->reloc_done = 0; | |
1980 | tprel_gotent->reloc_xlated = 0; | |
1981 | } | |
1982 | ||
1983 | tprel_gotent->use_count = 1; | |
1984 | tprel_gotent->reloc_type = R_ALPHA_GOTTPREL; | |
1985 | } | |
1986 | } | |
1987 | ||
1988 | return true; | |
1989 | } | |
1990 | ||
1991 | static struct elf_link_tls_segment * | |
1992 | elf64_alpha_relax_find_tls_segment (info, seg) | |
1993 | struct alpha_relax_info *info; | |
1994 | struct elf_link_tls_segment *seg; | |
1995 | { | |
1996 | bfd *output_bfd = info->sec->output_section->owner; | |
1997 | asection *first_tls_sec = NULL, *o; | |
1998 | unsigned int align; | |
1999 | bfd_vma base, end; | |
2000 | ||
2001 | for (o = output_bfd->sections; o ; o = o->next) | |
2002 | if ((o->flags & SEC_THREAD_LOCAL) != 0 | |
2003 | && (o->flags & SEC_LOAD) != 0) | |
2004 | { | |
2005 | first_tls_sec = o; | |
2006 | break; | |
2007 | } | |
2008 | if (!first_tls_sec) | |
2009 | return NULL; | |
2010 | ||
2011 | base = first_tls_sec->vma; | |
2012 | align = 0; | |
2013 | ||
2014 | for (o = first_tls_sec; o && (o->flags & SEC_THREAD_LOCAL); o = o->next) | |
2015 | { | |
2016 | bfd_vma size; | |
2017 | ||
2018 | if (bfd_get_section_alignment (output_bfd, o) > align) | |
2019 | align = bfd_get_section_alignment (output_bfd, o); | |
2020 | ||
2021 | size = o->_raw_size; | |
2022 | if (size == 0 && (o->flags & SEC_HAS_CONTENTS) == 0) | |
2023 | { | |
2024 | struct bfd_link_order *lo; | |
2025 | for (lo = o->link_order_head; lo ; lo = lo->next) | |
2026 | if (size < lo->offset + lo->size) | |
2027 | size = lo->offset + lo->size; | |
2028 | } | |
2029 | end = o->vma + size; | |
2030 | } | |
2031 | ||
2032 | seg->start = base; | |
2033 | seg->size = end - base; | |
2034 | seg->align = align; | |
2035 | ||
2036 | return seg; | |
2037 | } | |
2038 | ||
252b5132 RH |
2039 | static boolean |
2040 | elf64_alpha_relax_section (abfd, sec, link_info, again) | |
2041 | bfd *abfd; | |
2042 | asection *sec; | |
2043 | struct bfd_link_info *link_info; | |
2044 | boolean *again; | |
2045 | { | |
2046 | Elf_Internal_Shdr *symtab_hdr; | |
9ad5cbcf | 2047 | Elf_Internal_Shdr *shndx_hdr; |
252b5132 RH |
2048 | Elf_Internal_Rela *internal_relocs; |
2049 | Elf_Internal_Rela *free_relocs = NULL; | |
2050 | Elf_Internal_Rela *irel, *irelend; | |
2051 | bfd_byte *free_contents = NULL; | |
9e756d64 | 2052 | Elf64_External_Sym *extsyms; |
252b5132 | 2053 | Elf64_External_Sym *free_extsyms = NULL; |
9ad5cbcf | 2054 | Elf_External_Sym_Shndx *shndx_buf = NULL; |
252b5132 RH |
2055 | struct alpha_elf_got_entry **local_got_entries; |
2056 | struct alpha_relax_info info; | |
9e756d64 | 2057 | struct elf_link_tls_segment tls_segment; |
252b5132 RH |
2058 | |
2059 | /* We are not currently changing any sizes, so only one pass. */ | |
2060 | *again = false; | |
2061 | ||
2062 | if (link_info->relocateable | |
2063 | || (sec->flags & SEC_RELOC) == 0 | |
2064 | || sec->reloc_count == 0) | |
2065 | return true; | |
2066 | ||
2067 | /* If this is the first time we have been called for this section, | |
2068 | initialize the cooked size. */ | |
2069 | if (sec->_cooked_size == 0) | |
2070 | sec->_cooked_size = sec->_raw_size; | |
2071 | ||
2072 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
2073 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
2074 | ||
2075 | /* Load the relocations for this section. */ | |
2076 | internal_relocs = (_bfd_elf64_link_read_relocs | |
2077 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
2078 | link_info->keep_memory)); | |
2079 | if (internal_relocs == NULL) | |
2080 | goto error_return; | |
2081 | if (! link_info->keep_memory) | |
2082 | free_relocs = internal_relocs; | |
2083 | ||
fe8bc63d | 2084 | memset(&info, 0, sizeof (info)); |
252b5132 RH |
2085 | info.abfd = abfd; |
2086 | info.sec = sec; | |
2087 | info.link_info = link_info; | |
9e756d64 | 2088 | info.symtab_hdr = symtab_hdr; |
252b5132 RH |
2089 | info.relocs = internal_relocs; |
2090 | info.relend = irelend = internal_relocs + sec->reloc_count; | |
2091 | ||
b646261c RH |
2092 | /* Find the GP for this object. Do not store the result back via |
2093 | _bfd_set_gp_value, since this could change again before final. */ | |
252b5132 RH |
2094 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; |
2095 | if (info.gotobj) | |
2096 | { | |
2097 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; | |
b646261c RH |
2098 | info.gp = (sgot->output_section->vma |
2099 | + sgot->output_offset | |
2100 | + 0x8000); | |
252b5132 RH |
2101 | } |
2102 | ||
9e756d64 RH |
2103 | /* Get the section contents. */ |
2104 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2105 | info.contents = elf_section_data (sec)->this_hdr.contents; | |
2106 | else | |
252b5132 | 2107 | { |
9e756d64 | 2108 | info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size); |
252b5132 | 2109 | if (info.contents == NULL) |
9e756d64 RH |
2110 | goto error_return; |
2111 | free_contents = info.contents; | |
252b5132 | 2112 | |
9e756d64 RH |
2113 | if (! bfd_get_section_contents (abfd, sec, info.contents, |
2114 | (file_ptr) 0, sec->_raw_size)) | |
2115 | goto error_return; | |
2116 | } | |
252b5132 | 2117 | |
9e756d64 RH |
2118 | /* Read this BFD's symbols. */ |
2119 | if (symtab_hdr->contents != NULL) | |
2120 | extsyms = (Elf64_External_Sym *) symtab_hdr->contents; | |
2121 | else | |
2122 | { | |
2123 | bfd_size_type amt = symtab_hdr->sh_info * sizeof (Elf64_External_Sym); | |
2124 | extsyms = (Elf64_External_Sym *) bfd_malloc (amt); | |
252b5132 | 2125 | if (extsyms == NULL) |
9e756d64 RH |
2126 | goto error_return; |
2127 | free_extsyms = extsyms; | |
2128 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 | |
2129 | || bfd_bread ((PTR) extsyms, amt, abfd) != amt) | |
2130 | goto error_return; | |
2131 | } | |
9ad5cbcf | 2132 | |
9e756d64 RH |
2133 | shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
2134 | if (shndx_hdr->sh_size != 0) | |
2135 | { | |
2136 | bfd_size_type amt; | |
2137 | amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx); | |
2138 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); | |
2139 | if (shndx_buf == NULL) | |
2140 | goto error_return; | |
2141 | if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0 | |
2142 | || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt) | |
2143 | goto error_return; | |
2144 | } | |
9ad5cbcf | 2145 | |
9e756d64 RH |
2146 | /* Compute the TLS segment information. The version normally found in |
2147 | elf_hash_table (link_info)->tls_segment isn't built until final_link. | |
2148 | ??? Probably should look into extracting this into a common function. */ | |
2149 | info.tls_segment = elf64_alpha_relax_find_tls_segment (&info, &tls_segment); | |
2150 | ||
2151 | for (irel = internal_relocs; irel < irelend; irel++) | |
2152 | { | |
2153 | bfd_vma symval; | |
2154 | Elf_Internal_Sym isym; | |
2155 | struct alpha_elf_got_entry *gotent; | |
2156 | unsigned long r_type = ELF64_R_TYPE (irel->r_info); | |
2157 | ||
2158 | /* Early exit for unhandled or unrelaxable relocations. */ | |
2159 | switch (r_type) | |
2160 | { | |
2161 | case R_ALPHA_LITERAL: | |
2162 | case R_ALPHA_GPRELHIGH: | |
2163 | case R_ALPHA_GPRELLOW: | |
2164 | case R_ALPHA_GOTDTPREL: | |
2165 | case R_ALPHA_GOTTPREL: | |
2166 | case R_ALPHA_TLSGD: | |
2167 | case R_ALPHA_TLSLDM: | |
2168 | break; | |
2169 | default: | |
2170 | continue; | |
252b5132 RH |
2171 | } |
2172 | ||
2173 | /* Get the value of the symbol referred to by the reloc. */ | |
2174 | if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
2175 | { | |
2176 | /* A local symbol. */ | |
9ad5cbcf AM |
2177 | Elf64_External_Sym *esym; |
2178 | Elf_External_Sym_Shndx *shndx; | |
2179 | ||
2180 | esym = extsyms + ELF64_R_SYM (irel->r_info); | |
2181 | shndx = shndx_buf + (shndx_buf ? ELF64_R_SYM (irel->r_info) : 0); | |
2182 | bfd_elf64_swap_symbol_in (abfd, esym, shndx, &isym); | |
252b5132 RH |
2183 | if (isym.st_shndx == SHN_UNDEF) |
2184 | info.tsec = bfd_und_section_ptr; | |
252b5132 RH |
2185 | else if (isym.st_shndx == SHN_ABS) |
2186 | info.tsec = bfd_abs_section_ptr; | |
2187 | else if (isym.st_shndx == SHN_COMMON) | |
2188 | info.tsec = bfd_com_section_ptr; | |
fe8bc63d | 2189 | else |
9ad5cbcf | 2190 | info.tsec = bfd_section_from_elf_index (abfd, isym.st_shndx); |
252b5132 RH |
2191 | |
2192 | info.h = NULL; | |
2193 | info.other = isym.st_other; | |
9e756d64 | 2194 | info.first_gotent = &local_got_entries[ELF64_R_SYM(irel->r_info)]; |
252b5132 RH |
2195 | symval = isym.st_value; |
2196 | } | |
2197 | else | |
2198 | { | |
2199 | unsigned long indx; | |
2200 | struct alpha_elf_link_hash_entry *h; | |
2201 | ||
2202 | indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
2203 | h = alpha_elf_sym_hashes (abfd)[indx]; | |
2204 | BFD_ASSERT (h != NULL); | |
2205 | ||
2206 | while (h->root.root.type == bfd_link_hash_indirect | |
2207 | || h->root.root.type == bfd_link_hash_warning) | |
2208 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
2209 | ||
252b5132 | 2210 | info.h = h; |
252b5132 RH |
2211 | info.tsec = h->root.root.u.def.section; |
2212 | info.other = h->root.other; | |
9e756d64 | 2213 | info.first_gotent = &h->got_entries; |
252b5132 RH |
2214 | symval = h->root.root.u.def.value; |
2215 | } | |
2216 | ||
2217 | /* Search for the got entry to be used by this relocation. */ | |
9e756d64 RH |
2218 | for (gotent = *info.first_gotent; gotent ; gotent = gotent->next) |
2219 | if (gotent->gotobj == info.gotobj | |
2220 | && gotent->reloc_type == r_type | |
2221 | && gotent->addend == irel->r_addend) | |
2222 | break; | |
252b5132 RH |
2223 | info.gotent = gotent; |
2224 | ||
2225 | symval += info.tsec->output_section->vma + info.tsec->output_offset; | |
2226 | symval += irel->r_addend; | |
2227 | ||
9e756d64 RH |
2228 | switch (r_type) |
2229 | { | |
2230 | case R_ALPHA_LITERAL: | |
2231 | BFD_ASSERT(info.gotent != NULL); | |
252b5132 | 2232 | |
9e756d64 RH |
2233 | /* If there exist LITUSE relocations immediately following, this |
2234 | opens up all sorts of interesting optimizations, because we | |
2235 | now know every location that this address load is used. */ | |
2236 | if (irel+1 < irelend | |
2237 | && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) | |
2238 | { | |
2239 | if (!elf64_alpha_relax_with_lituse (&info, symval, irel)) | |
2240 | goto error_return; | |
2241 | } | |
2242 | else | |
2243 | { | |
2244 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
2245 | goto error_return; | |
2246 | } | |
2247 | break; | |
252b5132 | 2248 | |
9e756d64 RH |
2249 | case R_ALPHA_GPRELHIGH: |
2250 | case R_ALPHA_GPRELLOW: | |
2251 | if (!elf64_alpha_relax_gprelhilo (&info, symval, irel, | |
2252 | r_type == R_ALPHA_GPRELHIGH)) | |
252b5132 | 2253 | goto error_return; |
9e756d64 RH |
2254 | break; |
2255 | ||
2256 | case R_ALPHA_GOTDTPREL: | |
2257 | case R_ALPHA_GOTTPREL: | |
2258 | BFD_ASSERT(info.gotent != NULL); | |
2259 | if (!elf64_alpha_relax_got_load (&info, symval, irel, r_type)) | |
252b5132 | 2260 | goto error_return; |
9e756d64 RH |
2261 | break; |
2262 | ||
2263 | case R_ALPHA_TLSGD: | |
2264 | case R_ALPHA_TLSLDM: | |
2265 | BFD_ASSERT(info.gotent != NULL); | |
2266 | if (!elf64_alpha_relax_tls_get_addr (&info, symval, irel, | |
2267 | r_type == R_ALPHA_TLSGD)) | |
2268 | goto error_return; | |
2269 | break; | |
252b5132 RH |
2270 | } |
2271 | } | |
2272 | ||
f44f99a5 RH |
2273 | if (!elf64_alpha_size_plt_section (link_info)) |
2274 | return false; | |
2275 | if (!elf64_alpha_size_got_sections (link_info)) | |
2276 | return false; | |
2277 | if (!elf64_alpha_size_rela_got_section (link_info)) | |
252b5132 RH |
2278 | return false; |
2279 | ||
2280 | if (info.changed_relocs) | |
9e756d64 | 2281 | elf_section_data (sec)->relocs = internal_relocs; |
252b5132 | 2282 | else if (free_relocs != NULL) |
9e756d64 | 2283 | free (free_relocs); |
252b5132 RH |
2284 | |
2285 | if (info.changed_contents) | |
9e756d64 | 2286 | elf_section_data (sec)->this_hdr.contents = info.contents; |
252b5132 RH |
2287 | else if (free_contents != NULL) |
2288 | { | |
2289 | if (! link_info->keep_memory) | |
2290 | free (free_contents); | |
2291 | else | |
2292 | { | |
2293 | /* Cache the section contents for elf_link_input_bfd. */ | |
2294 | elf_section_data (sec)->this_hdr.contents = info.contents; | |
2295 | } | |
2296 | } | |
2297 | ||
9ad5cbcf AM |
2298 | if (shndx_buf != NULL) |
2299 | free (shndx_buf); | |
2300 | ||
252b5132 RH |
2301 | if (free_extsyms != NULL) |
2302 | { | |
2303 | if (! link_info->keep_memory) | |
2304 | free (free_extsyms); | |
2305 | else | |
2306 | { | |
2307 | /* Cache the symbols for elf_link_input_bfd. */ | |
973ffd63 | 2308 | symtab_hdr->contents = (unsigned char *) extsyms; |
252b5132 RH |
2309 | } |
2310 | } | |
2311 | ||
2312 | *again = info.changed_contents || info.changed_relocs; | |
2313 | ||
2314 | return true; | |
2315 | ||
2316 | error_return: | |
2317 | if (free_relocs != NULL) | |
2318 | free (free_relocs); | |
2319 | if (free_contents != NULL) | |
2320 | free (free_contents); | |
9ad5cbcf AM |
2321 | if (shndx_buf != NULL) |
2322 | free (shndx_buf); | |
252b5132 RH |
2323 | if (free_extsyms != NULL) |
2324 | free (free_extsyms); | |
2325 | return false; | |
2326 | } | |
2327 | \f | |
2328 | /* PLT/GOT Stuff */ | |
2329 | #define PLT_HEADER_SIZE 32 | |
dc810e39 AM |
2330 | #define PLT_HEADER_WORD1 (bfd_vma) 0xc3600000 /* br $27,.+4 */ |
2331 | #define PLT_HEADER_WORD2 (bfd_vma) 0xa77b000c /* ldq $27,12($27) */ | |
2332 | #define PLT_HEADER_WORD3 (bfd_vma) 0x47ff041f /* nop */ | |
2333 | #define PLT_HEADER_WORD4 (bfd_vma) 0x6b7b0000 /* jmp $27,($27) */ | |
252b5132 RH |
2334 | |
2335 | #define PLT_ENTRY_SIZE 12 | |
2336 | #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ | |
2337 | #define PLT_ENTRY_WORD2 0 | |
2338 | #define PLT_ENTRY_WORD3 0 | |
2339 | ||
3765b1be | 2340 | #define MAX_GOT_SIZE (64*1024) |
252b5132 RH |
2341 | |
2342 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" | |
2343 | \f | |
2344 | /* Handle an Alpha specific section when reading an object file. This | |
2345 | is called when elfcode.h finds a section with an unknown type. | |
2346 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure | |
2347 | how to. */ | |
2348 | ||
2349 | static boolean | |
2350 | elf64_alpha_section_from_shdr (abfd, hdr, name) | |
2351 | bfd *abfd; | |
2352 | Elf64_Internal_Shdr *hdr; | |
2353 | char *name; | |
2354 | { | |
2355 | asection *newsect; | |
2356 | ||
2357 | /* There ought to be a place to keep ELF backend specific flags, but | |
2358 | at the moment there isn't one. We just keep track of the | |
2359 | sections by their name, instead. Fortunately, the ABI gives | |
2360 | suggested names for all the MIPS specific sections, so we will | |
2361 | probably get away with this. */ | |
2362 | switch (hdr->sh_type) | |
2363 | { | |
2364 | case SHT_ALPHA_DEBUG: | |
2365 | if (strcmp (name, ".mdebug") != 0) | |
2366 | return false; | |
2367 | break; | |
252b5132 RH |
2368 | default: |
2369 | return false; | |
2370 | } | |
2371 | ||
2372 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) | |
2373 | return false; | |
2374 | newsect = hdr->bfd_section; | |
2375 | ||
2376 | if (hdr->sh_type == SHT_ALPHA_DEBUG) | |
2377 | { | |
2378 | if (! bfd_set_section_flags (abfd, newsect, | |
2379 | (bfd_get_section_flags (abfd, newsect) | |
2380 | | SEC_DEBUGGING))) | |
2381 | return false; | |
2382 | } | |
2383 | ||
252b5132 RH |
2384 | return true; |
2385 | } | |
2386 | ||
204692d7 RH |
2387 | /* Convert Alpha specific section flags to bfd internal section flags. */ |
2388 | ||
2389 | static boolean | |
2390 | elf64_alpha_section_flags (flags, hdr) | |
2391 | flagword *flags; | |
2392 | Elf64_Internal_Shdr *hdr; | |
2393 | { | |
2394 | if (hdr->sh_flags & SHF_ALPHA_GPREL) | |
2395 | *flags |= SEC_SMALL_DATA; | |
2396 | ||
2397 | return true; | |
2398 | } | |
2399 | ||
252b5132 RH |
2400 | /* Set the correct type for an Alpha ELF section. We do this by the |
2401 | section name, which is a hack, but ought to work. */ | |
2402 | ||
2403 | static boolean | |
2404 | elf64_alpha_fake_sections (abfd, hdr, sec) | |
2405 | bfd *abfd; | |
2406 | Elf64_Internal_Shdr *hdr; | |
2407 | asection *sec; | |
2408 | { | |
2409 | register const char *name; | |
2410 | ||
2411 | name = bfd_get_section_name (abfd, sec); | |
2412 | ||
2413 | if (strcmp (name, ".mdebug") == 0) | |
2414 | { | |
2415 | hdr->sh_type = SHT_ALPHA_DEBUG; | |
2416 | /* In a shared object on Irix 5.3, the .mdebug section has an | |
2417 | entsize of 0. FIXME: Does this matter? */ | |
2418 | if ((abfd->flags & DYNAMIC) != 0 ) | |
2419 | hdr->sh_entsize = 0; | |
2420 | else | |
2421 | hdr->sh_entsize = 1; | |
2422 | } | |
204692d7 RH |
2423 | else if ((sec->flags & SEC_SMALL_DATA) |
2424 | || strcmp (name, ".sdata") == 0 | |
252b5132 RH |
2425 | || strcmp (name, ".sbss") == 0 |
2426 | || strcmp (name, ".lit4") == 0 | |
2427 | || strcmp (name, ".lit8") == 0) | |
2428 | hdr->sh_flags |= SHF_ALPHA_GPREL; | |
2429 | ||
2430 | return true; | |
2431 | } | |
2432 | ||
2433 | /* Hook called by the linker routine which adds symbols from an object | |
2434 | file. We use it to put .comm items in .sbss, and not .bss. */ | |
2435 | ||
2436 | static boolean | |
2437 | elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) | |
2438 | bfd *abfd; | |
2439 | struct bfd_link_info *info; | |
2440 | const Elf_Internal_Sym *sym; | |
56fc028e AJ |
2441 | const char **namep ATTRIBUTE_UNUSED; |
2442 | flagword *flagsp ATTRIBUTE_UNUSED; | |
252b5132 RH |
2443 | asection **secp; |
2444 | bfd_vma *valp; | |
2445 | { | |
2446 | if (sym->st_shndx == SHN_COMMON | |
2447 | && !info->relocateable | |
c0846b23 | 2448 | && sym->st_size <= elf_gp_size (abfd)) |
252b5132 RH |
2449 | { |
2450 | /* Common symbols less than or equal to -G nn bytes are | |
2451 | automatically put into .sbss. */ | |
2452 | ||
2453 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); | |
2454 | ||
2455 | if (scomm == NULL) | |
2456 | { | |
2457 | scomm = bfd_make_section (abfd, ".scommon"); | |
2458 | if (scomm == NULL | |
2459 | || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC | |
2460 | | SEC_IS_COMMON | |
2461 | | SEC_LINKER_CREATED))) | |
2462 | return false; | |
2463 | } | |
2464 | ||
2465 | *secp = scomm; | |
2466 | *valp = sym->st_size; | |
2467 | } | |
2468 | ||
2469 | return true; | |
2470 | } | |
2471 | ||
2472 | /* Create the .got section. */ | |
2473 | ||
2474 | static boolean | |
2475 | elf64_alpha_create_got_section(abfd, info) | |
2476 | bfd *abfd; | |
56fc028e | 2477 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
2478 | { |
2479 | asection *s; | |
2480 | ||
2481 | if (bfd_get_section_by_name (abfd, ".got")) | |
2482 | return true; | |
2483 | ||
2484 | s = bfd_make_section (abfd, ".got"); | |
2485 | if (s == NULL | |
2486 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2487 | | SEC_HAS_CONTENTS | |
2488 | | SEC_IN_MEMORY | |
2489 | | SEC_LINKER_CREATED)) | |
2490 | || !bfd_set_section_alignment (abfd, s, 3)) | |
2491 | return false; | |
2492 | ||
2493 | alpha_elf_tdata (abfd)->got = s; | |
2494 | ||
2495 | return true; | |
2496 | } | |
2497 | ||
2498 | /* Create all the dynamic sections. */ | |
2499 | ||
2500 | static boolean | |
2501 | elf64_alpha_create_dynamic_sections (abfd, info) | |
2502 | bfd *abfd; | |
2503 | struct bfd_link_info *info; | |
2504 | { | |
2505 | asection *s; | |
2506 | struct elf_link_hash_entry *h; | |
2507 | ||
2508 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ | |
2509 | ||
2510 | s = bfd_make_section (abfd, ".plt"); | |
2511 | if (s == NULL | |
2512 | || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2513 | | SEC_HAS_CONTENTS | |
2514 | | SEC_IN_MEMORY | |
2515 | | SEC_LINKER_CREATED | |
2516 | | SEC_CODE)) | |
2517 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
2518 | return false; | |
2519 | ||
2520 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
2521 | .plt section. */ | |
2522 | h = NULL; | |
2523 | if (! (_bfd_generic_link_add_one_symbol | |
2524 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
2525 | (bfd_vma) 0, (const char *) NULL, false, | |
2526 | get_elf_backend_data (abfd)->collect, | |
2527 | (struct bfd_link_hash_entry **) &h))) | |
2528 | return false; | |
2529 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
2530 | h->type = STT_OBJECT; | |
2531 | ||
2532 | if (info->shared | |
2533 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
2534 | return false; | |
2535 | ||
2536 | s = bfd_make_section (abfd, ".rela.plt"); | |
2537 | if (s == NULL | |
2538 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2539 | | SEC_HAS_CONTENTS | |
2540 | | SEC_IN_MEMORY | |
2541 | | SEC_LINKER_CREATED | |
2542 | | SEC_READONLY)) | |
2543 | || ! bfd_set_section_alignment (abfd, s, 3)) | |
2544 | return false; | |
2545 | ||
2546 | /* We may or may not have created a .got section for this object, but | |
2547 | we definitely havn't done the rest of the work. */ | |
2548 | ||
2549 | if (!elf64_alpha_create_got_section (abfd, info)) | |
2550 | return false; | |
2551 | ||
2552 | s = bfd_make_section(abfd, ".rela.got"); | |
2553 | if (s == NULL | |
2554 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD | |
2555 | | SEC_HAS_CONTENTS | |
2556 | | SEC_IN_MEMORY | |
2557 | | SEC_LINKER_CREATED | |
2558 | | SEC_READONLY)) | |
2559 | || !bfd_set_section_alignment (abfd, s, 3)) | |
2560 | return false; | |
2561 | ||
2562 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the | |
2563 | dynobj's .got section. We don't do this in the linker script | |
2564 | because we don't want to define the symbol if we are not creating | |
2565 | a global offset table. */ | |
2566 | h = NULL; | |
2567 | if (!(_bfd_generic_link_add_one_symbol | |
2568 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, | |
2569 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, | |
2570 | false, get_elf_backend_data (abfd)->collect, | |
2571 | (struct bfd_link_hash_entry **) &h))) | |
2572 | return false; | |
2573 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
2574 | h->type = STT_OBJECT; | |
2575 | ||
2576 | if (info->shared | |
2577 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) | |
2578 | return false; | |
2579 | ||
2580 | elf_hash_table (info)->hgot = h; | |
2581 | ||
2582 | return true; | |
2583 | } | |
2584 | \f | |
2585 | /* Read ECOFF debugging information from a .mdebug section into a | |
2586 | ecoff_debug_info structure. */ | |
2587 | ||
2588 | static boolean | |
2589 | elf64_alpha_read_ecoff_info (abfd, section, debug) | |
2590 | bfd *abfd; | |
2591 | asection *section; | |
2592 | struct ecoff_debug_info *debug; | |
2593 | { | |
2594 | HDRR *symhdr; | |
2595 | const struct ecoff_debug_swap *swap; | |
2596 | char *ext_hdr = NULL; | |
2597 | ||
2598 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
fe8bc63d | 2599 | memset (debug, 0, sizeof (*debug)); |
252b5132 | 2600 | |
dc810e39 | 2601 | ext_hdr = (char *) bfd_malloc (swap->external_hdr_size); |
252b5132 RH |
2602 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
2603 | goto error_return; | |
2604 | ||
2605 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, | |
2606 | swap->external_hdr_size) | |
2607 | == false) | |
2608 | goto error_return; | |
2609 | ||
2610 | symhdr = &debug->symbolic_header; | |
2611 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); | |
2612 | ||
2613 | /* The symbolic header contains absolute file offsets and sizes to | |
2614 | read. */ | |
2615 | #define READ(ptr, offset, count, size, type) \ | |
2616 | if (symhdr->count == 0) \ | |
2617 | debug->ptr = NULL; \ | |
2618 | else \ | |
2619 | { \ | |
dc810e39 AM |
2620 | bfd_size_type amt = (bfd_size_type) size * symhdr->count; \ |
2621 | debug->ptr = (type) bfd_malloc (amt); \ | |
252b5132 RH |
2622 | if (debug->ptr == NULL) \ |
2623 | goto error_return; \ | |
2624 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ | |
dc810e39 | 2625 | || bfd_bread (debug->ptr, amt, abfd) != amt) \ |
252b5132 RH |
2626 | goto error_return; \ |
2627 | } | |
2628 | ||
2629 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); | |
2630 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); | |
2631 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); | |
2632 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); | |
2633 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); | |
2634 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), | |
2635 | union aux_ext *); | |
2636 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); | |
2637 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); | |
2638 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); | |
2639 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); | |
2640 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); | |
2641 | #undef READ | |
2642 | ||
2643 | debug->fdr = NULL; | |
2644 | debug->adjust = NULL; | |
2645 | ||
2646 | return true; | |
2647 | ||
2648 | error_return: | |
2649 | if (ext_hdr != NULL) | |
2650 | free (ext_hdr); | |
2651 | if (debug->line != NULL) | |
2652 | free (debug->line); | |
2653 | if (debug->external_dnr != NULL) | |
2654 | free (debug->external_dnr); | |
2655 | if (debug->external_pdr != NULL) | |
2656 | free (debug->external_pdr); | |
2657 | if (debug->external_sym != NULL) | |
2658 | free (debug->external_sym); | |
2659 | if (debug->external_opt != NULL) | |
2660 | free (debug->external_opt); | |
2661 | if (debug->external_aux != NULL) | |
2662 | free (debug->external_aux); | |
2663 | if (debug->ss != NULL) | |
2664 | free (debug->ss); | |
2665 | if (debug->ssext != NULL) | |
2666 | free (debug->ssext); | |
2667 | if (debug->external_fdr != NULL) | |
2668 | free (debug->external_fdr); | |
2669 | if (debug->external_rfd != NULL) | |
2670 | free (debug->external_rfd); | |
2671 | if (debug->external_ext != NULL) | |
2672 | free (debug->external_ext); | |
2673 | return false; | |
2674 | } | |
2675 | ||
2676 | /* Alpha ELF local labels start with '$'. */ | |
2677 | ||
2678 | static boolean | |
2679 | elf64_alpha_is_local_label_name (abfd, name) | |
56fc028e | 2680 | bfd *abfd ATTRIBUTE_UNUSED; |
252b5132 RH |
2681 | const char *name; |
2682 | { | |
2683 | return name[0] == '$'; | |
2684 | } | |
2685 | ||
2686 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line | |
2687 | routine in order to handle the ECOFF debugging information. We | |
2688 | still call this mips_elf_find_line because of the slot | |
2689 | find_line_info in elf_obj_tdata is declared that way. */ | |
2690 | ||
2691 | struct mips_elf_find_line | |
2692 | { | |
2693 | struct ecoff_debug_info d; | |
2694 | struct ecoff_find_line i; | |
2695 | }; | |
2696 | ||
2697 | static boolean | |
2698 | elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr, | |
2699 | functionname_ptr, line_ptr) | |
2700 | bfd *abfd; | |
2701 | asection *section; | |
2702 | asymbol **symbols; | |
2703 | bfd_vma offset; | |
2704 | const char **filename_ptr; | |
2705 | const char **functionname_ptr; | |
2706 | unsigned int *line_ptr; | |
2707 | { | |
2708 | asection *msec; | |
2709 | ||
95404643 RH |
2710 | if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset, |
2711 | filename_ptr, functionname_ptr, | |
2712 | line_ptr, 0, | |
2713 | &elf_tdata (abfd)->dwarf2_find_line_info)) | |
2714 | return true; | |
2715 | ||
252b5132 RH |
2716 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
2717 | if (msec != NULL) | |
2718 | { | |
2719 | flagword origflags; | |
2720 | struct mips_elf_find_line *fi; | |
2721 | const struct ecoff_debug_swap * const swap = | |
2722 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
2723 | ||
2724 | /* If we are called during a link, alpha_elf_final_link may have | |
2725 | cleared the SEC_HAS_CONTENTS field. We force it back on here | |
2726 | if appropriate (which it normally will be). */ | |
2727 | origflags = msec->flags; | |
2728 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) | |
2729 | msec->flags |= SEC_HAS_CONTENTS; | |
2730 | ||
2731 | fi = elf_tdata (abfd)->find_line_info; | |
2732 | if (fi == NULL) | |
2733 | { | |
2734 | bfd_size_type external_fdr_size; | |
2735 | char *fraw_src; | |
2736 | char *fraw_end; | |
2737 | struct fdr *fdr_ptr; | |
dc810e39 | 2738 | bfd_size_type amt = sizeof (struct mips_elf_find_line); |
252b5132 | 2739 | |
dc810e39 | 2740 | fi = (struct mips_elf_find_line *) bfd_zalloc (abfd, amt); |
252b5132 RH |
2741 | if (fi == NULL) |
2742 | { | |
2743 | msec->flags = origflags; | |
2744 | return false; | |
2745 | } | |
2746 | ||
2747 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) | |
2748 | { | |
2749 | msec->flags = origflags; | |
2750 | return false; | |
2751 | } | |
2752 | ||
2753 | /* Swap in the FDR information. */ | |
dc810e39 AM |
2754 | amt = fi->d.symbolic_header.ifdMax * sizeof (struct fdr); |
2755 | fi->d.fdr = (struct fdr *) bfd_alloc (abfd, amt); | |
252b5132 RH |
2756 | if (fi->d.fdr == NULL) |
2757 | { | |
2758 | msec->flags = origflags; | |
2759 | return false; | |
2760 | } | |
2761 | external_fdr_size = swap->external_fdr_size; | |
2762 | fdr_ptr = fi->d.fdr; | |
2763 | fraw_src = (char *) fi->d.external_fdr; | |
2764 | fraw_end = (fraw_src | |
2765 | + fi->d.symbolic_header.ifdMax * external_fdr_size); | |
2766 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) | |
2767 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); | |
2768 | ||
2769 | elf_tdata (abfd)->find_line_info = fi; | |
2770 | ||
2771 | /* Note that we don't bother to ever free this information. | |
2772 | find_nearest_line is either called all the time, as in | |
2773 | objdump -l, so the information should be saved, or it is | |
2774 | rarely called, as in ld error messages, so the memory | |
2775 | wasted is unimportant. Still, it would probably be a | |
2776 | good idea for free_cached_info to throw it away. */ | |
2777 | } | |
2778 | ||
2779 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, | |
2780 | &fi->i, filename_ptr, functionname_ptr, | |
2781 | line_ptr)) | |
2782 | { | |
2783 | msec->flags = origflags; | |
2784 | return true; | |
2785 | } | |
2786 | ||
2787 | msec->flags = origflags; | |
2788 | } | |
2789 | ||
2790 | /* Fall back on the generic ELF find_nearest_line routine. */ | |
2791 | ||
2792 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, | |
2793 | filename_ptr, functionname_ptr, | |
2794 | line_ptr); | |
2795 | } | |
2796 | \f | |
2797 | /* Structure used to pass information to alpha_elf_output_extsym. */ | |
2798 | ||
2799 | struct extsym_info | |
2800 | { | |
2801 | bfd *abfd; | |
2802 | struct bfd_link_info *info; | |
2803 | struct ecoff_debug_info *debug; | |
2804 | const struct ecoff_debug_swap *swap; | |
2805 | boolean failed; | |
2806 | }; | |
2807 | ||
2808 | static boolean | |
2809 | elf64_alpha_output_extsym (h, data) | |
2810 | struct alpha_elf_link_hash_entry *h; | |
2811 | PTR data; | |
2812 | { | |
2813 | struct extsym_info *einfo = (struct extsym_info *) data; | |
2814 | boolean strip; | |
2815 | asection *sec, *output_section; | |
2816 | ||
e92d460e AM |
2817 | if (h->root.root.type == bfd_link_hash_warning) |
2818 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
2819 | ||
252b5132 RH |
2820 | if (h->root.indx == -2) |
2821 | strip = false; | |
2822 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
e92d460e AM |
2823 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) |
2824 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
2825 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) | |
252b5132 RH |
2826 | strip = true; |
2827 | else if (einfo->info->strip == strip_all | |
e92d460e AM |
2828 | || (einfo->info->strip == strip_some |
2829 | && bfd_hash_lookup (einfo->info->keep_hash, | |
2830 | h->root.root.root.string, | |
2831 | false, false) == NULL)) | |
252b5132 RH |
2832 | strip = true; |
2833 | else | |
2834 | strip = false; | |
2835 | ||
2836 | if (strip) | |
2837 | return true; | |
2838 | ||
2839 | if (h->esym.ifd == -2) | |
2840 | { | |
2841 | h->esym.jmptbl = 0; | |
2842 | h->esym.cobol_main = 0; | |
2843 | h->esym.weakext = 0; | |
2844 | h->esym.reserved = 0; | |
2845 | h->esym.ifd = ifdNil; | |
2846 | h->esym.asym.value = 0; | |
2847 | h->esym.asym.st = stGlobal; | |
2848 | ||
2849 | if (h->root.root.type != bfd_link_hash_defined | |
e92d460e AM |
2850 | && h->root.root.type != bfd_link_hash_defweak) |
2851 | h->esym.asym.sc = scAbs; | |
252b5132 | 2852 | else |
e92d460e AM |
2853 | { |
2854 | const char *name; | |
2855 | ||
2856 | sec = h->root.root.u.def.section; | |
2857 | output_section = sec->output_section; | |
2858 | ||
2859 | /* When making a shared library and symbol h is the one from | |
2860 | the another shared library, OUTPUT_SECTION may be null. */ | |
2861 | if (output_section == NULL) | |
2862 | h->esym.asym.sc = scUndefined; | |
2863 | else | |
2864 | { | |
2865 | name = bfd_section_name (output_section->owner, output_section); | |
2866 | ||
2867 | if (strcmp (name, ".text") == 0) | |
2868 | h->esym.asym.sc = scText; | |
2869 | else if (strcmp (name, ".data") == 0) | |
2870 | h->esym.asym.sc = scData; | |
2871 | else if (strcmp (name, ".sdata") == 0) | |
2872 | h->esym.asym.sc = scSData; | |
2873 | else if (strcmp (name, ".rodata") == 0 | |
2874 | || strcmp (name, ".rdata") == 0) | |
2875 | h->esym.asym.sc = scRData; | |
2876 | else if (strcmp (name, ".bss") == 0) | |
2877 | h->esym.asym.sc = scBss; | |
2878 | else if (strcmp (name, ".sbss") == 0) | |
2879 | h->esym.asym.sc = scSBss; | |
2880 | else if (strcmp (name, ".init") == 0) | |
2881 | h->esym.asym.sc = scInit; | |
2882 | else if (strcmp (name, ".fini") == 0) | |
2883 | h->esym.asym.sc = scFini; | |
2884 | else | |
2885 | h->esym.asym.sc = scAbs; | |
2886 | } | |
2887 | } | |
252b5132 RH |
2888 | |
2889 | h->esym.asym.reserved = 0; | |
2890 | h->esym.asym.index = indexNil; | |
2891 | } | |
2892 | ||
2893 | if (h->root.root.type == bfd_link_hash_common) | |
2894 | h->esym.asym.value = h->root.root.u.c.size; | |
2895 | else if (h->root.root.type == bfd_link_hash_defined | |
2896 | || h->root.root.type == bfd_link_hash_defweak) | |
2897 | { | |
2898 | if (h->esym.asym.sc == scCommon) | |
e92d460e | 2899 | h->esym.asym.sc = scBss; |
252b5132 | 2900 | else if (h->esym.asym.sc == scSCommon) |
e92d460e | 2901 | h->esym.asym.sc = scSBss; |
252b5132 RH |
2902 | |
2903 | sec = h->root.root.u.def.section; | |
2904 | output_section = sec->output_section; | |
2905 | if (output_section != NULL) | |
e92d460e AM |
2906 | h->esym.asym.value = (h->root.root.u.def.value |
2907 | + sec->output_offset | |
2908 | + output_section->vma); | |
252b5132 | 2909 | else |
e92d460e | 2910 | h->esym.asym.value = 0; |
252b5132 RH |
2911 | } |
2912 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
2913 | { | |
2914 | /* Set type and value for a symbol with a function stub. */ | |
2915 | h->esym.asym.st = stProc; | |
2916 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); | |
2917 | if (sec == NULL) | |
2918 | h->esym.asym.value = 0; | |
2919 | else | |
2920 | { | |
2921 | output_section = sec->output_section; | |
2922 | if (output_section != NULL) | |
2923 | h->esym.asym.value = (h->root.plt.offset | |
2924 | + sec->output_offset | |
2925 | + output_section->vma); | |
2926 | else | |
2927 | h->esym.asym.value = 0; | |
2928 | } | |
252b5132 RH |
2929 | } |
2930 | ||
2931 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, | |
e92d460e AM |
2932 | h->root.root.root.string, |
2933 | &h->esym)) | |
252b5132 RH |
2934 | { |
2935 | einfo->failed = true; | |
2936 | return false; | |
2937 | } | |
2938 | ||
2939 | return true; | |
2940 | } | |
252b5132 | 2941 | \f |
3765b1be RH |
2942 | /* Search for and possibly create a got entry. */ |
2943 | ||
2944 | static struct alpha_elf_got_entry * | |
2945 | get_got_entry (abfd, h, r_type, r_symndx, r_addend) | |
2946 | bfd *abfd; | |
2947 | struct alpha_elf_link_hash_entry *h; | |
2948 | unsigned long r_type, r_symndx; | |
2949 | bfd_vma r_addend; | |
2950 | { | |
2951 | struct alpha_elf_got_entry *gotent; | |
2952 | struct alpha_elf_got_entry **slot; | |
2953 | ||
2954 | if (h) | |
2955 | slot = &h->got_entries; | |
2956 | else | |
2957 | { | |
2958 | /* This is a local .got entry -- record for merge. */ | |
2959 | ||
2960 | struct alpha_elf_got_entry **local_got_entries; | |
2961 | ||
2962 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; | |
2963 | if (!local_got_entries) | |
2964 | { | |
2965 | bfd_size_type size; | |
2966 | Elf_Internal_Shdr *symtab_hdr; | |
2967 | ||
2968 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
2969 | size = symtab_hdr->sh_info; | |
2970 | size *= sizeof (struct alpha_elf_got_entry *); | |
2971 | ||
2972 | local_got_entries | |
2973 | = (struct alpha_elf_got_entry **) bfd_alloc (abfd, size); | |
2974 | if (!local_got_entries) | |
2975 | return NULL; | |
2976 | ||
2977 | memset (local_got_entries, 0, (size_t) size); | |
2978 | alpha_elf_tdata (abfd)->local_got_entries = local_got_entries; | |
2979 | } | |
2980 | ||
2981 | slot = &local_got_entries[r_symndx]; | |
2982 | } | |
2983 | ||
2984 | for (gotent = *slot; gotent ; gotent = gotent->next) | |
2985 | if (gotent->gotobj == abfd | |
2986 | && gotent->reloc_type == r_type | |
2987 | && gotent->addend == r_addend) | |
2988 | break; | |
2989 | ||
2990 | if (!gotent) | |
2991 | { | |
2992 | int entry_size; | |
2993 | bfd_size_type amt; | |
2994 | ||
2995 | amt = sizeof (struct alpha_elf_got_entry); | |
2996 | gotent = (struct alpha_elf_got_entry *) bfd_alloc (abfd, amt); | |
2997 | if (!gotent) | |
2998 | return NULL; | |
2999 | ||
3000 | gotent->gotobj = abfd; | |
3001 | gotent->addend = r_addend; | |
3002 | gotent->got_offset = -1; | |
3003 | gotent->use_count = 1; | |
3004 | gotent->reloc_type = r_type; | |
3005 | gotent->reloc_done = 0; | |
3006 | gotent->reloc_xlated = 0; | |
3007 | ||
3008 | gotent->next = *slot; | |
3009 | *slot = gotent; | |
3010 | ||
3011 | entry_size = alpha_got_entry_size (r_type); | |
3012 | alpha_elf_tdata (abfd)->total_got_size += entry_size; | |
3013 | if (!h) | |
3014 | alpha_elf_tdata(abfd)->local_got_size += entry_size; | |
3015 | } | |
3016 | else | |
3017 | gotent->use_count += 1; | |
3018 | ||
3019 | return gotent; | |
3020 | } | |
3021 | ||
252b5132 RH |
3022 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
3023 | ||
3024 | static boolean | |
3025 | elf64_alpha_check_relocs (abfd, info, sec, relocs) | |
3026 | bfd *abfd; | |
3027 | struct bfd_link_info *info; | |
3028 | asection *sec; | |
3029 | const Elf_Internal_Rela *relocs; | |
3030 | { | |
3031 | bfd *dynobj; | |
3032 | asection *sreloc; | |
3033 | const char *rel_sec_name; | |
3034 | Elf_Internal_Shdr *symtab_hdr; | |
3035 | struct alpha_elf_link_hash_entry **sym_hashes; | |
252b5132 | 3036 | const Elf_Internal_Rela *rel, *relend; |
3765b1be | 3037 | boolean got_created; |
dc810e39 | 3038 | bfd_size_type amt; |
252b5132 RH |
3039 | |
3040 | if (info->relocateable) | |
3041 | return true; | |
3042 | ||
3043 | dynobj = elf_hash_table(info)->dynobj; | |
3044 | if (dynobj == NULL) | |
3045 | elf_hash_table(info)->dynobj = dynobj = abfd; | |
3046 | ||
3047 | sreloc = NULL; | |
3048 | rel_sec_name = NULL; | |
3049 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; | |
3050 | sym_hashes = alpha_elf_sym_hashes(abfd); | |
3765b1be | 3051 | got_created = false; |
252b5132 RH |
3052 | |
3053 | relend = relocs + sec->reloc_count; | |
3054 | for (rel = relocs; rel < relend; ++rel) | |
3055 | { | |
3765b1be RH |
3056 | enum { |
3057 | NEED_GOT = 1, | |
3058 | NEED_GOT_ENTRY = 2, | |
3059 | NEED_DYNREL = 4 | |
3060 | }; | |
3061 | ||
252b5132 RH |
3062 | unsigned long r_symndx, r_type; |
3063 | struct alpha_elf_link_hash_entry *h; | |
3765b1be RH |
3064 | unsigned int gotent_flags; |
3065 | boolean maybe_dynamic; | |
3066 | unsigned int need; | |
3067 | bfd_vma addend; | |
252b5132 RH |
3068 | |
3069 | r_symndx = ELF64_R_SYM (rel->r_info); | |
3070 | if (r_symndx < symtab_hdr->sh_info) | |
3071 | h = NULL; | |
3072 | else | |
3073 | { | |
3074 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3075 | ||
3076 | while (h->root.root.type == bfd_link_hash_indirect | |
3077 | || h->root.root.type == bfd_link_hash_warning) | |
3078 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3079 | ||
3080 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; | |
3081 | } | |
3765b1be RH |
3082 | |
3083 | /* We can only get preliminary data on whether a symbol is | |
3084 | locally or externally defined, as not all of the input files | |
3085 | have yet been processed. Do something with what we know, as | |
3086 | this may help reduce memory usage and processing time later. */ | |
3087 | maybe_dynamic = false; | |
3088 | if (h && ((info->shared | |
3089 | && (!info->symbolic || info->allow_shlib_undefined)) | |
3090 | || ! (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) | |
c853d7f6 | 3091 | || h->root.root.type == bfd_link_hash_defweak)) |
3765b1be RH |
3092 | maybe_dynamic = true; |
3093 | ||
3094 | need = 0; | |
3095 | gotent_flags = 0; | |
252b5132 | 3096 | r_type = ELF64_R_TYPE (rel->r_info); |
3765b1be | 3097 | addend = rel->r_addend; |
252b5132 RH |
3098 | |
3099 | switch (r_type) | |
3100 | { | |
3101 | case R_ALPHA_LITERAL: | |
3765b1be RH |
3102 | need = NEED_GOT | NEED_GOT_ENTRY; |
3103 | ||
3104 | /* Remember how this literal is used from its LITUSEs. | |
3105 | This will be important when it comes to decide if we can | |
3106 | create a .plt entry for a function symbol. */ | |
3107 | while (++rel < relend && ELF64_R_TYPE (rel->r_info) == R_ALPHA_LITUSE) | |
3108 | if (rel->r_addend >= 1 && rel->r_addend <= 5) | |
3109 | gotent_flags |= 1 << rel->r_addend; | |
3110 | --rel; | |
3111 | ||
3112 | /* No LITUSEs -- presumably the address is used somehow. */ | |
3113 | if (gotent_flags == 0) | |
3114 | gotent_flags = ALPHA_ELF_LINK_HASH_LU_ADDR; | |
3115 | break; | |
252b5132 RH |
3116 | |
3117 | case R_ALPHA_GPDISP: | |
dfe57ca0 | 3118 | case R_ALPHA_GPREL16: |
252b5132 RH |
3119 | case R_ALPHA_GPREL32: |
3120 | case R_ALPHA_GPRELHIGH: | |
3121 | case R_ALPHA_GPRELLOW: | |
7793f4d0 | 3122 | case R_ALPHA_BRSGP: |
3765b1be RH |
3123 | need = NEED_GOT; |
3124 | break; | |
3125 | ||
3126 | case R_ALPHA_REFLONG: | |
3127 | case R_ALPHA_REFQUAD: | |
3128 | if (info->shared || maybe_dynamic) | |
3129 | need = NEED_DYNREL; | |
3130 | break; | |
3131 | ||
3132 | case R_ALPHA_TLSGD: | |
3133 | case R_ALPHA_TLSLDM: | |
3134 | case R_ALPHA_GOTDTPREL: | |
3135 | need = NEED_GOT | NEED_GOT_ENTRY; | |
3136 | break; | |
3137 | ||
3138 | case R_ALPHA_GOTTPREL: | |
3139 | need = NEED_GOT | NEED_GOT_ENTRY; | |
9e756d64 | 3140 | gotent_flags = ALPHA_ELF_LINK_HASH_TLS_IE; |
3765b1be RH |
3141 | if (info->shared) |
3142 | info->flags |= DF_STATIC_TLS; | |
3143 | break; | |
3144 | ||
3145 | case R_ALPHA_TPREL64: | |
3146 | if (info->shared || maybe_dynamic) | |
3147 | need = NEED_DYNREL; | |
3148 | if (info->shared) | |
3149 | info->flags |= DF_STATIC_TLS; | |
3150 | break; | |
3151 | } | |
3152 | ||
3153 | if (need & NEED_GOT) | |
3154 | { | |
252b5132 RH |
3155 | if (!got_created) |
3156 | { | |
3157 | if (!elf64_alpha_create_got_section (abfd, info)) | |
3158 | return false; | |
3159 | ||
3160 | /* Make sure the object's gotobj is set to itself so | |
3161 | that we default to every object with its own .got. | |
3162 | We'll merge .gots later once we've collected each | |
3163 | object's info. */ | |
3164 | alpha_elf_tdata(abfd)->gotobj = abfd; | |
3165 | ||
3166 | got_created = 1; | |
3167 | } | |
3765b1be | 3168 | } |
252b5132 | 3169 | |
3765b1be RH |
3170 | if (need & NEED_GOT_ENTRY) |
3171 | { | |
3172 | struct alpha_elf_got_entry *gotent; | |
252b5132 | 3173 | |
3765b1be RH |
3174 | gotent = get_got_entry (abfd, h, r_type, r_symndx, addend); |
3175 | if (!gotent) | |
3176 | return false; | |
3177 | ||
3178 | if (gotent_flags) | |
3179 | { | |
3180 | gotent->flags |= gotent_flags; | |
3181 | if (h) | |
3182 | { | |
3183 | gotent_flags |= h->flags; | |
3184 | h->flags = gotent_flags; | |
3185 | ||
3186 | /* Make a guess as to whether a .plt entry is needed. */ | |
3187 | if ((gotent_flags & ALPHA_ELF_LINK_HASH_LU_FUNC) | |
3188 | && !(gotent_flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC)) | |
3189 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3190 | else | |
3191 | h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
3192 | } | |
3193 | } | |
3194 | } | |
3195 | ||
3196 | if (need & NEED_DYNREL) | |
3197 | { | |
252b5132 RH |
3198 | if (rel_sec_name == NULL) |
3199 | { | |
3200 | rel_sec_name = (bfd_elf_string_from_elf_section | |
3201 | (abfd, elf_elfheader(abfd)->e_shstrndx, | |
3202 | elf_section_data(sec)->rel_hdr.sh_name)); | |
3203 | if (rel_sec_name == NULL) | |
3204 | return false; | |
3205 | ||
3206 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 | |
3207 | && strcmp (bfd_get_section_name (abfd, sec), | |
3208 | rel_sec_name+5) == 0); | |
3209 | } | |
3210 | ||
3211 | /* We need to create the section here now whether we eventually | |
3212 | use it or not so that it gets mapped to an output section by | |
3213 | the linker. If not used, we'll kill it in | |
3214 | size_dynamic_sections. */ | |
3215 | if (sreloc == NULL) | |
3216 | { | |
3217 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); | |
3218 | if (sreloc == NULL) | |
3219 | { | |
dc810e39 AM |
3220 | flagword flags; |
3221 | ||
252b5132 | 3222 | sreloc = bfd_make_section (dynobj, rel_sec_name); |
dc810e39 AM |
3223 | flags = (SEC_HAS_CONTENTS | SEC_IN_MEMORY |
3224 | | SEC_LINKER_CREATED | SEC_READONLY); | |
3225 | if (sec->flags & SEC_ALLOC) | |
3226 | flags |= SEC_ALLOC | SEC_LOAD; | |
252b5132 | 3227 | if (sreloc == NULL |
dc810e39 | 3228 | || !bfd_set_section_flags (dynobj, sreloc, flags) |
252b5132 RH |
3229 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) |
3230 | return false; | |
3231 | } | |
3232 | } | |
3233 | ||
3234 | if (h) | |
3235 | { | |
3236 | /* Since we havn't seen all of the input symbols yet, we | |
3237 | don't know whether we'll actually need a dynamic relocation | |
3238 | entry for this reloc. So make a record of it. Once we | |
3239 | find out if this thing needs dynamic relocation we'll | |
fe8bc63d | 3240 | expand the relocation sections by the appropriate amount. */ |
252b5132 RH |
3241 | |
3242 | struct alpha_elf_reloc_entry *rent; | |
3243 | ||
3244 | for (rent = h->reloc_entries; rent; rent = rent->next) | |
3245 | if (rent->rtype == r_type && rent->srel == sreloc) | |
3246 | break; | |
3247 | ||
3248 | if (!rent) | |
3249 | { | |
dc810e39 AM |
3250 | amt = sizeof (struct alpha_elf_reloc_entry); |
3251 | rent = (struct alpha_elf_reloc_entry *) bfd_alloc (abfd, amt); | |
252b5132 RH |
3252 | if (!rent) |
3253 | return false; | |
3254 | ||
3255 | rent->srel = sreloc; | |
3256 | rent->rtype = r_type; | |
3257 | rent->count = 1; | |
73896efb RH |
3258 | rent->reltext = ((sec->flags & (SEC_READONLY | SEC_ALLOC)) |
3259 | == (SEC_READONLY | SEC_ALLOC)); | |
252b5132 RH |
3260 | |
3261 | rent->next = h->reloc_entries; | |
3262 | h->reloc_entries = rent; | |
3263 | } | |
3264 | else | |
3265 | rent->count++; | |
3266 | } | |
c853d7f6 | 3267 | else if (info->shared) |
252b5132 | 3268 | { |
c555c5c5 AM |
3269 | /* If this is a shared library, and the section is to be |
3270 | loaded into memory, we need a RELATIVE reloc. */ | |
252b5132 | 3271 | sreloc->_raw_size += sizeof (Elf64_External_Rela); |
c853d7f6 RH |
3272 | if ((sec->flags & (SEC_READONLY | SEC_ALLOC)) |
3273 | == (SEC_READONLY | SEC_ALLOC)) | |
fcfbdf31 | 3274 | info->flags |= DF_TEXTREL; |
252b5132 | 3275 | } |
252b5132 RH |
3276 | } |
3277 | } | |
3278 | ||
3279 | return true; | |
3280 | } | |
3281 | ||
3282 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3283 | regular object. The current definition is in some section of the | |
3284 | dynamic object, but we're not including those sections. We have to | |
3285 | change the definition to something the rest of the link can | |
3286 | understand. */ | |
3287 | ||
3288 | static boolean | |
3289 | elf64_alpha_adjust_dynamic_symbol (info, h) | |
3290 | struct bfd_link_info *info; | |
3291 | struct elf_link_hash_entry *h; | |
3292 | { | |
3293 | bfd *dynobj; | |
3294 | asection *s; | |
3295 | struct alpha_elf_link_hash_entry *ah; | |
3296 | ||
3297 | dynobj = elf_hash_table(info)->dynobj; | |
3298 | ah = (struct alpha_elf_link_hash_entry *)h; | |
3299 | ||
3300 | /* Now that we've seen all of the input symbols, finalize our decision | |
3301 | about whether this symbol should get a .plt entry. */ | |
3302 | ||
8ba89f17 | 3303 | if (alpha_elf_dynamic_symbol_p (h, info) |
252b5132 RH |
3304 | && ((h->type == STT_FUNC |
3305 | && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) | |
3306 | || (h->type == STT_NOTYPE | |
3765b1be RH |
3307 | && (ah->flags & ALPHA_ELF_LINK_HASH_LU_FUNC) |
3308 | && !(ah->flags & ~ALPHA_ELF_LINK_HASH_LU_FUNC))) | |
252b5132 RH |
3309 | /* Don't prevent otherwise valid programs from linking by attempting |
3310 | to create a new .got entry somewhere. A Correct Solution would be | |
3311 | to add a new .got section to a new object file and let it be merged | |
3312 | somewhere later. But for now don't bother. */ | |
3313 | && ah->got_entries) | |
3314 | { | |
3315 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
3316 | ||
3317 | s = bfd_get_section_by_name(dynobj, ".plt"); | |
3318 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) | |
3319 | return false; | |
3320 | ||
3321 | /* The first bit of the .plt is reserved. */ | |
3322 | if (s->_raw_size == 0) | |
3323 | s->_raw_size = PLT_HEADER_SIZE; | |
3324 | ||
3325 | h->plt.offset = s->_raw_size; | |
3326 | s->_raw_size += PLT_ENTRY_SIZE; | |
3327 | ||
3328 | /* If this symbol is not defined in a regular file, and we are not | |
3329 | generating a shared library, then set the symbol to the location | |
3330 | in the .plt. This is required to make function pointers compare | |
3331 | equal between the normal executable and the shared library. */ | |
3332 | if (! info->shared | |
3333 | && h->root.type != bfd_link_hash_defweak) | |
3334 | { | |
3335 | h->root.u.def.section = s; | |
3336 | h->root.u.def.value = h->plt.offset; | |
3337 | } | |
3338 | ||
3339 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ | |
3340 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3341 | BFD_ASSERT (s != NULL); | |
3342 | s->_raw_size += sizeof (Elf64_External_Rela); | |
3343 | ||
3344 | return true; | |
3345 | } | |
3346 | else | |
3347 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
3348 | ||
3349 | /* If this is a weak symbol, and there is a real definition, the | |
3350 | processor independent code will have arranged for us to see the | |
3351 | real definition first, and we can just use the same value. */ | |
3352 | if (h->weakdef != NULL) | |
3353 | { | |
3354 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
3355 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
3356 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
3357 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
3358 | return true; | |
3359 | } | |
3360 | ||
3361 | /* This is a reference to a symbol defined by a dynamic object which | |
3362 | is not a function. The Alpha, since it uses .got entries for all | |
3363 | symbols even in regular objects, does not need the hackery of a | |
3364 | .dynbss section and COPY dynamic relocations. */ | |
3365 | ||
3366 | return true; | |
3367 | } | |
3368 | ||
3369 | /* Symbol versioning can create new symbols, and make our old symbols | |
3370 | indirect to the new ones. Consolidate the got and reloc information | |
3371 | in these situations. */ | |
3372 | ||
3373 | static boolean | |
3374 | elf64_alpha_merge_ind_symbols (hi, dummy) | |
3375 | struct alpha_elf_link_hash_entry *hi; | |
56fc028e | 3376 | PTR dummy ATTRIBUTE_UNUSED; |
252b5132 RH |
3377 | { |
3378 | struct alpha_elf_link_hash_entry *hs; | |
3379 | ||
3380 | if (hi->root.root.type != bfd_link_hash_indirect) | |
3381 | return true; | |
3382 | hs = hi; | |
3383 | do { | |
3384 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; | |
3385 | } while (hs->root.root.type == bfd_link_hash_indirect); | |
3386 | ||
3387 | /* Merge the flags. Whee. */ | |
3388 | ||
3389 | hs->flags |= hi->flags; | |
3390 | ||
3391 | /* Merge the .got entries. Cannibalize the old symbol's list in | |
3392 | doing so, since we don't need it anymore. */ | |
3393 | ||
3394 | if (hs->got_entries == NULL) | |
3395 | hs->got_entries = hi->got_entries; | |
3396 | else | |
3397 | { | |
3398 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; | |
3399 | ||
3400 | gsh = hs->got_entries; | |
3401 | for (gi = hi->got_entries; gi ; gi = gin) | |
3402 | { | |
3403 | gin = gi->next; | |
3404 | for (gs = gsh; gs ; gs = gs->next) | |
3765b1be RH |
3405 | if (gi->gotobj == gs->gotobj |
3406 | && gi->reloc_type == gs->reloc_type | |
3407 | && gi->addend == gs->addend) | |
3408 | { | |
3409 | gi->use_count += gs->use_count; | |
3410 | goto got_found; | |
3411 | } | |
252b5132 RH |
3412 | gi->next = hs->got_entries; |
3413 | hs->got_entries = gi; | |
3414 | got_found:; | |
3415 | } | |
3416 | } | |
3417 | hi->got_entries = NULL; | |
3418 | ||
3419 | /* And similar for the reloc entries. */ | |
3420 | ||
3421 | if (hs->reloc_entries == NULL) | |
3422 | hs->reloc_entries = hi->reloc_entries; | |
3423 | else | |
3424 | { | |
3425 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; | |
3426 | ||
3427 | rsh = hs->reloc_entries; | |
3428 | for (ri = hi->reloc_entries; ri ; ri = rin) | |
3429 | { | |
3430 | rin = ri->next; | |
3431 | for (rs = rsh; rs ; rs = rs->next) | |
3432 | if (ri->rtype == rs->rtype) | |
3433 | { | |
3434 | rs->count += ri->count; | |
3435 | goto found_reloc; | |
3436 | } | |
3437 | ri->next = hs->reloc_entries; | |
3438 | hs->reloc_entries = ri; | |
3439 | found_reloc:; | |
3440 | } | |
3441 | } | |
3442 | hi->reloc_entries = NULL; | |
3443 | ||
3444 | return true; | |
3445 | } | |
3446 | ||
3447 | /* Is it possible to merge two object file's .got tables? */ | |
3448 | ||
3449 | static boolean | |
3450 | elf64_alpha_can_merge_gots (a, b) | |
3451 | bfd *a, *b; | |
3452 | { | |
3765b1be | 3453 | int total = alpha_elf_tdata (a)->total_got_size; |
252b5132 RH |
3454 | bfd *bsub; |
3455 | ||
3456 | /* Trivial quick fallout test. */ | |
3765b1be | 3457 | if (total + alpha_elf_tdata (b)->total_got_size <= MAX_GOT_SIZE) |
252b5132 RH |
3458 | return true; |
3459 | ||
3460 | /* By their nature, local .got entries cannot be merged. */ | |
3765b1be | 3461 | if ((total += alpha_elf_tdata (b)->local_got_size) > MAX_GOT_SIZE) |
252b5132 RH |
3462 | return false; |
3463 | ||
3464 | /* Failing the common trivial comparison, we must effectively | |
3465 | perform the merge. Not actually performing the merge means that | |
3466 | we don't have to store undo information in case we fail. */ | |
3467 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
3468 | { | |
3469 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); | |
3470 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
3471 | int i, n; | |
3472 | ||
d9bc7a44 | 3473 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
252b5132 RH |
3474 | for (i = 0; i < n; ++i) |
3475 | { | |
3476 | struct alpha_elf_got_entry *ae, *be; | |
3477 | struct alpha_elf_link_hash_entry *h; | |
3478 | ||
3479 | h = hashes[i]; | |
3480 | while (h->root.root.type == bfd_link_hash_indirect | |
3481 | || h->root.root.type == bfd_link_hash_warning) | |
3482 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3483 | ||
3484 | for (be = h->got_entries; be ; be = be->next) | |
3485 | { | |
3486 | if (be->use_count == 0) | |
3487 | continue; | |
3488 | if (be->gotobj != b) | |
3489 | continue; | |
3490 | ||
3491 | for (ae = h->got_entries; ae ; ae = ae->next) | |
3765b1be RH |
3492 | if (ae->gotobj == a |
3493 | && ae->reloc_type == be->reloc_type | |
3494 | && ae->addend == be->addend) | |
252b5132 RH |
3495 | goto global_found; |
3496 | ||
3765b1be RH |
3497 | total += alpha_got_entry_size (be->reloc_type); |
3498 | if (total > MAX_GOT_SIZE) | |
252b5132 RH |
3499 | return false; |
3500 | global_found:; | |
3501 | } | |
3502 | } | |
3503 | } | |
3504 | ||
3505 | return true; | |
3506 | } | |
3507 | ||
3508 | /* Actually merge two .got tables. */ | |
3509 | ||
3510 | static void | |
3511 | elf64_alpha_merge_gots (a, b) | |
3512 | bfd *a, *b; | |
3513 | { | |
3765b1be | 3514 | int total = alpha_elf_tdata (a)->total_got_size; |
252b5132 RH |
3515 | bfd *bsub; |
3516 | ||
3517 | /* Remember local expansion. */ | |
3518 | { | |
3765b1be | 3519 | int e = alpha_elf_tdata (b)->local_got_size; |
252b5132 | 3520 | total += e; |
3765b1be | 3521 | alpha_elf_tdata (a)->local_got_size += e; |
252b5132 RH |
3522 | } |
3523 | ||
3524 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) | |
3525 | { | |
3526 | struct alpha_elf_got_entry **local_got_entries; | |
3527 | struct alpha_elf_link_hash_entry **hashes; | |
3528 | Elf_Internal_Shdr *symtab_hdr; | |
3529 | int i, n; | |
3530 | ||
3531 | /* Let the local .got entries know they are part of a new subsegment. */ | |
3532 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; | |
3533 | if (local_got_entries) | |
3534 | { | |
3535 | n = elf_tdata (bsub)->symtab_hdr.sh_info; | |
3536 | for (i = 0; i < n; ++i) | |
3537 | { | |
3538 | struct alpha_elf_got_entry *ent; | |
3539 | for (ent = local_got_entries[i]; ent; ent = ent->next) | |
3540 | ent->gotobj = a; | |
3541 | } | |
3542 | } | |
3543 | ||
3544 | /* Merge the global .got entries. */ | |
3545 | hashes = alpha_elf_sym_hashes (bsub); | |
3546 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; | |
3547 | ||
d9bc7a44 | 3548 | n = NUM_SHDR_ENTRIES (symtab_hdr) - symtab_hdr->sh_info; |
252b5132 RH |
3549 | for (i = 0; i < n; ++i) |
3550 | { | |
3551 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; | |
3552 | struct alpha_elf_link_hash_entry *h; | |
3553 | ||
3554 | h = hashes[i]; | |
3555 | while (h->root.root.type == bfd_link_hash_indirect | |
3556 | || h->root.root.type == bfd_link_hash_warning) | |
3557 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
3558 | ||
3559 | start = &h->got_entries; | |
3560 | for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next) | |
3561 | { | |
3562 | if (be->use_count == 0) | |
3563 | { | |
3564 | *pbe = be->next; | |
3565 | continue; | |
3566 | } | |
3567 | if (be->gotobj != b) | |
3568 | continue; | |
3569 | ||
3570 | for (ae = *start; ae ; ae = ae->next) | |
3765b1be RH |
3571 | if (ae->gotobj == a |
3572 | && ae->reloc_type == be->reloc_type | |
3573 | && ae->addend == be->addend) | |
252b5132 RH |
3574 | { |
3575 | ae->flags |= be->flags; | |
3576 | ae->use_count += be->use_count; | |
3577 | *pbe = be->next; | |
3578 | goto global_found; | |
3579 | } | |
3580 | be->gotobj = a; | |
3765b1be | 3581 | total += alpha_got_entry_size (be->reloc_type); |
252b5132 RH |
3582 | |
3583 | global_found:; | |
3584 | } | |
3585 | } | |
3586 | ||
3587 | alpha_elf_tdata (bsub)->gotobj = a; | |
3588 | } | |
3765b1be | 3589 | alpha_elf_tdata (a)->total_got_size = total; |
252b5132 RH |
3590 | |
3591 | /* Merge the two in_got chains. */ | |
3592 | { | |
3593 | bfd *next; | |
3594 | ||
3595 | bsub = a; | |
3596 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) | |
3597 | bsub = next; | |
3598 | ||
3599 | alpha_elf_tdata (bsub)->in_got_link_next = b; | |
3600 | } | |
3601 | } | |
3602 | ||
3603 | /* Calculate the offsets for the got entries. */ | |
3604 | ||
3605 | static boolean | |
3606 | elf64_alpha_calc_got_offsets_for_symbol (h, arg) | |
3607 | struct alpha_elf_link_hash_entry *h; | |
52b9d213 | 3608 | PTR arg ATTRIBUTE_UNUSED; |
252b5132 RH |
3609 | { |
3610 | struct alpha_elf_got_entry *gotent; | |
3611 | ||
e92d460e AM |
3612 | if (h->root.root.type == bfd_link_hash_warning) |
3613 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3614 | ||
252b5132 RH |
3615 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
3616 | if (gotent->use_count > 0) | |
3617 | { | |
3618 | bfd_size_type *plge | |
3619 | = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size; | |
3620 | ||
3621 | gotent->got_offset = *plge; | |
3765b1be | 3622 | *plge += alpha_got_entry_size (gotent->reloc_type); |
252b5132 RH |
3623 | } |
3624 | ||
3625 | return true; | |
3626 | } | |
3627 | ||
3628 | static void | |
3629 | elf64_alpha_calc_got_offsets (info) | |
3630 | struct bfd_link_info *info; | |
3631 | { | |
3632 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; | |
3633 | ||
3634 | /* First, zero out the .got sizes, as we may be recalculating the | |
3635 | .got after optimizing it. */ | |
3636 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
3637 | alpha_elf_tdata(i)->got->_raw_size = 0; | |
3638 | ||
3639 | /* Next, fill in the offsets for all the global entries. */ | |
3640 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3641 | elf64_alpha_calc_got_offsets_for_symbol, | |
3642 | NULL); | |
3643 | ||
3644 | /* Finally, fill in the offsets for the local entries. */ | |
3645 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) | |
3646 | { | |
3647 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size; | |
3648 | bfd *j; | |
3649 | ||
3650 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) | |
3651 | { | |
3652 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
3653 | int k, n; | |
3654 | ||
3655 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; | |
3656 | if (!local_got_entries) | |
3657 | continue; | |
3658 | ||
3659 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
3660 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) | |
3661 | if (gotent->use_count > 0) | |
3662 | { | |
3663 | gotent->got_offset = got_offset; | |
3765b1be | 3664 | got_offset += alpha_got_entry_size (gotent->reloc_type); |
252b5132 RH |
3665 | } |
3666 | } | |
3667 | ||
3668 | alpha_elf_tdata(i)->got->_raw_size = got_offset; | |
3669 | alpha_elf_tdata(i)->got->_cooked_size = got_offset; | |
3670 | } | |
3671 | } | |
3672 | ||
3673 | /* Constructs the gots. */ | |
3674 | ||
3675 | static boolean | |
f44f99a5 | 3676 | elf64_alpha_size_got_sections (info) |
252b5132 RH |
3677 | struct bfd_link_info *info; |
3678 | { | |
52b9d213 | 3679 | bfd *i, *got_list, *cur_got_obj = NULL; |
252b5132 RH |
3680 | int something_changed = 0; |
3681 | ||
3682 | got_list = alpha_elf_hash_table (info)->got_list; | |
3683 | ||
3684 | /* On the first time through, pretend we have an existing got list | |
3685 | consisting of all of the input files. */ | |
3686 | if (got_list == NULL) | |
3687 | { | |
3688 | for (i = info->input_bfds; i ; i = i->link_next) | |
3689 | { | |
3690 | bfd *this_got = alpha_elf_tdata (i)->gotobj; | |
3691 | if (this_got == NULL) | |
3692 | continue; | |
3693 | ||
3694 | /* We are assuming no merging has yet ocurred. */ | |
3695 | BFD_ASSERT (this_got == i); | |
3696 | ||
3765b1be | 3697 | if (alpha_elf_tdata (this_got)->total_got_size > MAX_GOT_SIZE) |
252b5132 RH |
3698 | { |
3699 | /* Yikes! A single object file has too many entries. */ | |
3700 | (*_bfd_error_handler) | |
3701 | (_("%s: .got subsegment exceeds 64K (size %d)"), | |
8f615d07 | 3702 | bfd_archive_filename (i), |
3765b1be | 3703 | alpha_elf_tdata (this_got)->total_got_size); |
252b5132 RH |
3704 | return false; |
3705 | } | |
3706 | ||
3707 | if (got_list == NULL) | |
3708 | got_list = this_got; | |
3709 | else | |
3710 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; | |
3711 | cur_got_obj = this_got; | |
3712 | } | |
3713 | ||
3714 | /* Strange degenerate case of no got references. */ | |
3715 | if (got_list == NULL) | |
3716 | return true; | |
3717 | ||
3718 | alpha_elf_hash_table (info)->got_list = got_list; | |
3719 | ||
3720 | /* Force got offsets to be recalculated. */ | |
3721 | something_changed = 1; | |
3722 | } | |
3723 | ||
3724 | cur_got_obj = got_list; | |
3725 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; | |
3726 | while (i != NULL) | |
3727 | { | |
3728 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) | |
3729 | { | |
3730 | elf64_alpha_merge_gots (cur_got_obj, i); | |
3731 | i = alpha_elf_tdata(i)->got_link_next; | |
3732 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; | |
3733 | something_changed = 1; | |
3734 | } | |
3735 | else | |
3736 | { | |
3737 | cur_got_obj = i; | |
3738 | i = alpha_elf_tdata(i)->got_link_next; | |
3739 | } | |
3740 | } | |
3741 | ||
3742 | /* Once the gots have been merged, fill in the got offsets for | |
3743 | everything therein. */ | |
3744 | if (1 || something_changed) | |
3745 | elf64_alpha_calc_got_offsets (info); | |
3746 | ||
3747 | return true; | |
3748 | } | |
3749 | ||
f44f99a5 RH |
3750 | /* Called from relax_section to rebuild the PLT in light of |
3751 | potential changes in the function's status. */ | |
3752 | ||
3753 | static boolean | |
3754 | elf64_alpha_size_plt_section (info) | |
3755 | struct bfd_link_info *info; | |
3756 | { | |
3757 | asection *splt, *spltrel; | |
3758 | unsigned long entries; | |
3759 | bfd *dynobj; | |
3760 | ||
3761 | dynobj = elf_hash_table(info)->dynobj; | |
3762 | splt = bfd_get_section_by_name(dynobj, ".plt"); | |
3763 | if (splt == NULL) | |
3764 | return true; | |
3765 | ||
3766 | splt->_raw_size = 0; | |
3767 | ||
3768 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3769 | elf64_alpha_size_plt_section_1, splt); | |
3770 | ||
3771 | splt->_cooked_size = splt->_raw_size; | |
3772 | ||
3773 | /* Every plt entry requires a JMP_SLOT relocation. */ | |
3774 | spltrel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3775 | if (splt->_raw_size) | |
3776 | entries = (splt->_raw_size - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
3777 | else | |
3778 | entries = 0; | |
3779 | spltrel->_raw_size = entries * sizeof (Elf64_External_Rela); | |
3780 | spltrel->_cooked_size = spltrel->_raw_size; | |
3781 | ||
3782 | return true; | |
3783 | } | |
3784 | ||
3785 | static boolean | |
3786 | elf64_alpha_size_plt_section_1 (h, data) | |
3787 | struct alpha_elf_link_hash_entry *h; | |
3788 | PTR data; | |
3789 | { | |
3790 | asection *splt = (asection *) data; | |
3791 | struct alpha_elf_got_entry *gotent; | |
3792 | ||
3793 | /* If we didn't need an entry before, we still don't. */ | |
3794 | if (!(h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)) | |
3795 | return true; | |
3796 | ||
3797 | /* There must still be a LITERAL got entry for the function. */ | |
3798 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
3799 | if (gotent->reloc_type == R_ALPHA_LITERAL | |
3800 | && gotent->use_count > 0) | |
3801 | break; | |
3802 | ||
3803 | /* If there is, reset the PLT offset. If not, there's no longer | |
3804 | a need for the PLT entry. */ | |
3805 | if (gotent) | |
3806 | { | |
3807 | if (splt->_raw_size == 0) | |
3808 | splt->_raw_size = PLT_HEADER_SIZE; | |
3809 | h->root.plt.offset = splt->_raw_size; | |
3810 | splt->_raw_size += PLT_ENTRY_SIZE; | |
3811 | } | |
3812 | else | |
3813 | { | |
3814 | h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
3815 | h->root.plt.offset = -1; | |
3816 | } | |
3817 | ||
3818 | return true; | |
3819 | } | |
3820 | ||
252b5132 RH |
3821 | static boolean |
3822 | elf64_alpha_always_size_sections (output_bfd, info) | |
f44f99a5 | 3823 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
3824 | struct bfd_link_info *info; |
3825 | { | |
3826 | bfd *i; | |
3827 | ||
3828 | if (info->relocateable) | |
3829 | return true; | |
3830 | ||
3831 | /* First, take care of the indirect symbols created by versioning. */ | |
3832 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3833 | elf64_alpha_merge_ind_symbols, | |
3834 | NULL); | |
3835 | ||
f44f99a5 | 3836 | if (!elf64_alpha_size_got_sections (info)) |
252b5132 RH |
3837 | return false; |
3838 | ||
3839 | /* Allocate space for all of the .got subsections. */ | |
3840 | i = alpha_elf_hash_table (info)->got_list; | |
3841 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) | |
3842 | { | |
3843 | asection *s = alpha_elf_tdata(i)->got; | |
3844 | if (s->_raw_size > 0) | |
3845 | { | |
3846 | s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size); | |
3847 | if (s->contents == NULL) | |
3848 | return false; | |
3849 | } | |
3850 | } | |
3851 | ||
3852 | return true; | |
3853 | } | |
3854 | ||
3765b1be RH |
3855 | /* The number of dynamic relocations required by a static relocation. */ |
3856 | ||
3857 | static int | |
3858 | alpha_dynamic_entries_for_reloc (r_type, dynamic, shared) | |
3859 | int r_type, dynamic, shared; | |
3860 | { | |
3861 | switch (r_type) | |
3862 | { | |
3863 | /* May appear in GOT entries. */ | |
3864 | case R_ALPHA_TLSGD: | |
3865 | return (dynamic ? 2 : shared ? 1 : 0); | |
3866 | case R_ALPHA_TLSLDM: | |
3867 | return shared; | |
3868 | case R_ALPHA_LITERAL: | |
3869 | return dynamic || shared; | |
3870 | case R_ALPHA_GOTDTPREL: | |
3871 | case R_ALPHA_GOTTPREL: | |
3872 | return dynamic; | |
3873 | ||
3874 | /* May appear in data sections. */ | |
3875 | case R_ALPHA_REFLONG: | |
3876 | case R_ALPHA_REFQUAD: | |
3877 | return dynamic || shared; | |
3878 | case R_ALPHA_SREL64: | |
3879 | case R_ALPHA_TPREL64: | |
3880 | return dynamic; | |
3881 | ||
3882 | /* Everything else is illegal. We'll issue an error during | |
3883 | relocate_section. */ | |
3884 | default: | |
3885 | return 0; | |
3886 | } | |
3887 | } | |
3888 | ||
252b5132 RH |
3889 | /* Work out the sizes of the dynamic relocation entries. */ |
3890 | ||
3891 | static boolean | |
3892 | elf64_alpha_calc_dynrel_sizes (h, info) | |
3893 | struct alpha_elf_link_hash_entry *h; | |
3894 | struct bfd_link_info *info; | |
3895 | { | |
3765b1be RH |
3896 | boolean dynamic; |
3897 | struct alpha_elf_reloc_entry *relent; | |
f44f99a5 | 3898 | unsigned long entries; |
3765b1be | 3899 | |
e92d460e AM |
3900 | if (h->root.root.type == bfd_link_hash_warning) |
3901 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
3902 | ||
252b5132 RH |
3903 | /* If the symbol was defined as a common symbol in a regular object |
3904 | file, and there was no definition in any dynamic object, then the | |
3905 | linker will have allocated space for the symbol in a common | |
3906 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been | |
3907 | set. This is done for dynamic symbols in | |
3908 | elf_adjust_dynamic_symbol but this is not done for non-dynamic | |
3909 | symbols, somehow. */ | |
3910 | if (((h->root.elf_link_hash_flags | |
3911 | & (ELF_LINK_HASH_DEF_REGULAR | |
3912 | | ELF_LINK_HASH_REF_REGULAR | |
3913 | | ELF_LINK_HASH_DEF_DYNAMIC)) | |
3914 | == ELF_LINK_HASH_REF_REGULAR) | |
3915 | && (h->root.root.type == bfd_link_hash_defined | |
3916 | || h->root.root.type == bfd_link_hash_defweak) | |
3917 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) | |
f44f99a5 | 3918 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
252b5132 RH |
3919 | |
3920 | /* If the symbol is dynamic, we'll need all the relocations in their | |
3921 | natural form. If this is a shared object, and it has been forced | |
3922 | local, we'll need the same number of RELATIVE relocations. */ | |
3923 | ||
3765b1be | 3924 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); |
252b5132 | 3925 | |
3765b1be RH |
3926 | for (relent = h->reloc_entries; relent; relent = relent->next) |
3927 | { | |
3928 | entries = alpha_dynamic_entries_for_reloc (relent->rtype, dynamic, | |
3929 | info->shared); | |
3930 | if (entries) | |
3931 | { | |
3932 | relent->srel->_raw_size += | |
3933 | entries * sizeof (Elf64_External_Rela) * relent->count; | |
3934 | if (relent->reltext) | |
3935 | info->flags |= DT_TEXTREL; | |
3936 | } | |
3937 | } | |
252b5132 | 3938 | |
f44f99a5 RH |
3939 | return true; |
3940 | } | |
3941 | ||
3942 | /* Set the sizes of the dynamic relocation sections. */ | |
3943 | ||
3944 | static boolean | |
3945 | elf64_alpha_size_rela_got_section (info) | |
3946 | struct bfd_link_info *info; | |
3947 | { | |
3948 | unsigned long entries; | |
3949 | bfd *i, *dynobj; | |
3950 | asection *srel; | |
3951 | ||
3952 | /* Shared libraries often require RELATIVE relocs, and some relocs | |
3953 | require attention for the main application as well. */ | |
3954 | ||
3955 | entries = 0; | |
3956 | for (i = alpha_elf_hash_table(info)->got_list; | |
3957 | i ; i = alpha_elf_tdata(i)->got_link_next) | |
3958 | { | |
3959 | bfd *j; | |
3960 | ||
3961 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) | |
3962 | { | |
3963 | struct alpha_elf_got_entry **local_got_entries, *gotent; | |
3964 | int k, n; | |
3965 | ||
3966 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; | |
3967 | if (!local_got_entries) | |
3968 | continue; | |
3969 | ||
3970 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) | |
3971 | for (gotent = local_got_entries[k]; | |
3972 | gotent ; gotent = gotent->next) | |
3973 | if (gotent->use_count > 0) | |
3974 | entries += (alpha_dynamic_entries_for_reloc | |
3975 | (gotent->reloc_type, 0, info->shared)); | |
3976 | } | |
3977 | } | |
3978 | ||
3979 | dynobj = elf_hash_table(info)->dynobj; | |
3980 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3981 | if (!srel) | |
3982 | { | |
3983 | BFD_ASSERT (entries == 0); | |
3984 | return true; | |
3985 | } | |
3986 | srel->_raw_size = sizeof (Elf64_External_Rela) * entries; | |
3987 | ||
3988 | /* Now do the non-local symbols. */ | |
3989 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
3990 | elf64_alpha_size_rela_got_1, info); | |
3991 | ||
3992 | srel->_cooked_size = srel->_raw_size; | |
3993 | ||
3994 | return true; | |
3995 | } | |
3996 | ||
3997 | /* Subroutine of elf64_alpha_size_rela_got_section for doing the | |
3998 | global symbols. */ | |
3999 | ||
4000 | static boolean | |
4001 | elf64_alpha_size_rela_got_1 (h, info) | |
4002 | struct alpha_elf_link_hash_entry *h; | |
4003 | struct bfd_link_info *info; | |
4004 | { | |
4005 | boolean dynamic; | |
4006 | struct alpha_elf_got_entry *gotent; | |
4007 | unsigned long entries; | |
4008 | ||
4009 | if (h->root.root.type == bfd_link_hash_warning) | |
4010 | h = (struct alpha_elf_link_hash_entry *) h->root.root.u.i.link; | |
4011 | ||
4012 | /* If the symbol is dynamic, we'll need all the relocations in their | |
4013 | natural form. If this is a shared object, and it has been forced | |
4014 | local, we'll need the same number of RELATIVE relocations. */ | |
4015 | ||
4016 | dynamic = alpha_elf_dynamic_symbol_p (&h->root, info); | |
4017 | ||
3765b1be RH |
4018 | entries = 0; |
4019 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) | |
f44f99a5 RH |
4020 | if (gotent->use_count > 0) |
4021 | entries += alpha_dynamic_entries_for_reloc (gotent->reloc_type, | |
4022 | dynamic, info->shared); | |
252b5132 | 4023 | |
3765b1be RH |
4024 | /* If we are using a .plt entry, subtract one, as the first |
4025 | reference uses a .rela.plt entry instead. */ | |
4026 | if (h->root.plt.offset != MINUS_ONE) | |
4027 | entries--; | |
252b5132 | 4028 | |
3765b1be RH |
4029 | if (entries > 0) |
4030 | { | |
4031 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
4032 | asection *srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4033 | BFD_ASSERT (srel != NULL); | |
4034 | srel->_raw_size += sizeof (Elf64_External_Rela) * entries; | |
252b5132 RH |
4035 | } |
4036 | ||
4037 | return true; | |
4038 | } | |
4039 | ||
4040 | /* Set the sizes of the dynamic sections. */ | |
4041 | ||
4042 | static boolean | |
4043 | elf64_alpha_size_dynamic_sections (output_bfd, info) | |
24a35864 | 4044 | bfd *output_bfd ATTRIBUTE_UNUSED; |
252b5132 RH |
4045 | struct bfd_link_info *info; |
4046 | { | |
4047 | bfd *dynobj; | |
4048 | asection *s; | |
252b5132 RH |
4049 | boolean relplt; |
4050 | ||
4051 | dynobj = elf_hash_table(info)->dynobj; | |
4052 | BFD_ASSERT(dynobj != NULL); | |
4053 | ||
4054 | if (elf_hash_table (info)->dynamic_sections_created) | |
4055 | { | |
4056 | /* Set the contents of the .interp section to the interpreter. */ | |
4057 | if (!info->shared) | |
4058 | { | |
4059 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
4060 | BFD_ASSERT (s != NULL); | |
4061 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4062 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
4063 | } | |
4064 | ||
4065 | /* Now that we've seen all of the input files, we can decide which | |
4066 | symbols need dynamic relocation entries and which don't. We've | |
4067 | collected information in check_relocs that we can now apply to | |
4068 | size the dynamic relocation sections. */ | |
4069 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), | |
f44f99a5 | 4070 | elf64_alpha_calc_dynrel_sizes, info); |
252b5132 | 4071 | |
f44f99a5 | 4072 | elf64_alpha_size_rela_got_section (info); |
252b5132 RH |
4073 | } |
4074 | /* else we're not dynamic and by definition we don't need such things. */ | |
4075 | ||
4076 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
4077 | determined the sizes of the various dynamic sections. Allocate | |
4078 | memory for them. */ | |
252b5132 RH |
4079 | relplt = false; |
4080 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4081 | { | |
4082 | const char *name; | |
4083 | boolean strip; | |
4084 | ||
4085 | if (!(s->flags & SEC_LINKER_CREATED)) | |
4086 | continue; | |
4087 | ||
4088 | /* It's OK to base decisions on the section name, because none | |
4089 | of the dynobj section names depend upon the input files. */ | |
4090 | name = bfd_get_section_name (dynobj, s); | |
4091 | ||
4092 | /* If we don't need this section, strip it from the output file. | |
4093 | This is to handle .rela.bss and .rela.plt. We must create it | |
4094 | in create_dynamic_sections, because it must be created before | |
4095 | the linker maps input sections to output sections. The | |
4096 | linker does that before adjust_dynamic_symbol is called, and | |
4097 | it is that function which decides whether anything needs to | |
4098 | go into these sections. */ | |
4099 | ||
4100 | strip = false; | |
4101 | ||
4102 | if (strncmp (name, ".rela", 5) == 0) | |
4103 | { | |
4104 | strip = (s->_raw_size == 0); | |
4105 | ||
4106 | if (!strip) | |
4107 | { | |
252b5132 RH |
4108 | if (strcmp(name, ".rela.plt") == 0) |
4109 | relplt = true; | |
4110 | ||
4111 | /* We use the reloc_count field as a counter if we need | |
4112 | to copy relocs into the output file. */ | |
4113 | s->reloc_count = 0; | |
4114 | } | |
4115 | } | |
4116 | else if (strcmp (name, ".plt") != 0) | |
4117 | { | |
4118 | /* It's not one of our dynamic sections, so don't allocate space. */ | |
4119 | continue; | |
4120 | } | |
4121 | ||
4122 | if (strip) | |
7f8d5fc9 | 4123 | _bfd_strip_section_from_output (info, s); |
252b5132 RH |
4124 | else |
4125 | { | |
4126 | /* Allocate memory for the section contents. */ | |
dc810e39 | 4127 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
252b5132 RH |
4128 | if (s->contents == NULL && s->_raw_size != 0) |
4129 | return false; | |
4130 | } | |
4131 | } | |
4132 | ||
252b5132 RH |
4133 | if (elf_hash_table (info)->dynamic_sections_created) |
4134 | { | |
4135 | /* Add some entries to the .dynamic section. We fill in the | |
4136 | values later, in elf64_alpha_finish_dynamic_sections, but we | |
4137 | must add the entries now so that we get the correct size for | |
4138 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4139 | dynamic linker and used by the debugger. */ | |
dc810e39 AM |
4140 | #define add_dynamic_entry(TAG, VAL) \ |
4141 | bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
4142 | ||
252b5132 RH |
4143 | if (!info->shared) |
4144 | { | |
dc810e39 | 4145 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
252b5132 RH |
4146 | return false; |
4147 | } | |
4148 | ||
dc810e39 | 4149 | if (!add_dynamic_entry (DT_PLTGOT, 0)) |
252b5132 RH |
4150 | return false; |
4151 | ||
4152 | if (relplt) | |
4153 | { | |
dc810e39 AM |
4154 | if (!add_dynamic_entry (DT_PLTRELSZ, 0) |
4155 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
4156 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
252b5132 RH |
4157 | return false; |
4158 | } | |
4159 | ||
dc810e39 AM |
4160 | if (!add_dynamic_entry (DT_RELA, 0) |
4161 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4162 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
252b5132 RH |
4163 | return false; |
4164 | ||
fcfbdf31 | 4165 | if (info->flags & DF_TEXTREL) |
252b5132 | 4166 | { |
dc810e39 | 4167 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
252b5132 RH |
4168 | return false; |
4169 | } | |
4170 | } | |
dc810e39 | 4171 | #undef add_dynamic_entry |
252b5132 RH |
4172 | |
4173 | return true; | |
4174 | } | |
4175 | ||
252b5132 RH |
4176 | /* Relocate an Alpha ELF section. */ |
4177 | ||
4178 | static boolean | |
4179 | elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section, | |
4180 | contents, relocs, local_syms, local_sections) | |
4181 | bfd *output_bfd; | |
4182 | struct bfd_link_info *info; | |
4183 | bfd *input_bfd; | |
4184 | asection *input_section; | |
4185 | bfd_byte *contents; | |
4186 | Elf_Internal_Rela *relocs; | |
4187 | Elf_Internal_Sym *local_syms; | |
4188 | asection **local_sections; | |
4189 | { | |
3765b1be | 4190 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
252b5132 RH |
4191 | Elf_Internal_Rela *rel; |
4192 | Elf_Internal_Rela *relend; | |
3765b1be RH |
4193 | struct elf_link_tls_segment *tls_segment = NULL; |
4194 | asection *sgot = NULL, *srel = NULL, *srelgot = NULL; | |
4195 | bfd *dynobj = NULL, *gotobj = NULL; | |
4196 | bfd_vma gp = 0, tp_base = 0, dtp_base = 0; | |
f16fbd61 | 4197 | boolean ret_val = true; |
252b5132 | 4198 | |
3765b1be | 4199 | if (!info->relocateable) |
252b5132 | 4200 | { |
3765b1be | 4201 | const char *name; |
252b5132 | 4202 | |
3765b1be RH |
4203 | dynobj = elf_hash_table (info)->dynobj; |
4204 | if (dynobj) | |
4205 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4206 | ||
4207 | name = (bfd_elf_string_from_elf_section | |
4208 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, | |
4209 | elf_section_data(input_section)->rel_hdr.sh_name)); | |
4210 | BFD_ASSERT(name != NULL); | |
4211 | srel = bfd_get_section_by_name (dynobj, name); | |
4212 | ||
4213 | /* Find the gp value for this input bfd. */ | |
4214 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; | |
4215 | if (gotobj) | |
252b5132 | 4216 | { |
3765b1be RH |
4217 | sgot = alpha_elf_tdata (gotobj)->got; |
4218 | gp = _bfd_get_gp_value (gotobj); | |
4219 | if (gp == 0) | |
4220 | { | |
4221 | gp = (sgot->output_section->vma | |
4222 | + sgot->output_offset | |
4223 | + 0x8000); | |
4224 | _bfd_set_gp_value (gotobj, gp); | |
4225 | } | |
4226 | } | |
4227 | ||
4228 | tls_segment = elf_hash_table (info)->tls_segment; | |
4229 | if (tls_segment) | |
4230 | { | |
9e756d64 RH |
4231 | dtp_base = alpha_get_dtprel_base (tls_segment); |
4232 | tp_base = alpha_get_tprel_base (tls_segment); | |
3765b1be | 4233 | } |
252b5132 RH |
4234 | } |
4235 | ||
4236 | rel = relocs; | |
4237 | relend = relocs + input_section->reloc_count; | |
4238 | for (; rel < relend; rel++) | |
4239 | { | |
3765b1be RH |
4240 | struct alpha_elf_link_hash_entry *h; |
4241 | struct alpha_elf_got_entry *gotent; | |
4242 | bfd_reloc_status_type r; | |
252b5132 RH |
4243 | reloc_howto_type *howto; |
4244 | unsigned long r_symndx; | |
252b5132 | 4245 | Elf_Internal_Sym *sym; |
3765b1be RH |
4246 | asection *sec; |
4247 | bfd_vma value; | |
dc810e39 | 4248 | bfd_vma addend; |
3765b1be RH |
4249 | boolean dynamic_symbol_p; |
4250 | boolean undef_weak_ref; | |
4251 | unsigned long r_type; | |
252b5132 RH |
4252 | |
4253 | r_type = ELF64_R_TYPE(rel->r_info); | |
3765b1be | 4254 | if (r_type >= R_ALPHA_max) |
252b5132 | 4255 | { |
3765b1be RH |
4256 | (*_bfd_error_handler) |
4257 | (_("%s: unknown relocation type %d"), | |
4258 | bfd_archive_filename (input_bfd), (int)r_type); | |
252b5132 | 4259 | bfd_set_error (bfd_error_bad_value); |
3765b1be RH |
4260 | ret_val = false; |
4261 | continue; | |
252b5132 | 4262 | } |
252b5132 | 4263 | |
3765b1be | 4264 | howto = elf64_alpha_howto_table + r_type; |
252b5132 RH |
4265 | r_symndx = ELF64_R_SYM(rel->r_info); |
4266 | ||
4267 | if (info->relocateable) | |
4268 | { | |
4269 | /* This is a relocateable link. We don't have to change | |
4270 | anything, unless the reloc is against a section symbol, | |
4271 | in which case we have to adjust according to where the | |
4272 | section symbol winds up in the output section. */ | |
72b60c23 | 4273 | |
fe8bc63d | 4274 | /* The symbol associated with GPDISP and LITUSE is |
72b60c23 RH |
4275 | immaterial. Only the addend is significant. */ |
4276 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) | |
4277 | continue; | |
4278 | ||
252b5132 RH |
4279 | if (r_symndx < symtab_hdr->sh_info) |
4280 | { | |
4281 | sym = local_syms + r_symndx; | |
4282 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) | |
4283 | { | |
4284 | sec = local_sections[r_symndx]; | |
4285 | rel->r_addend += sec->output_offset + sym->st_value; | |
4286 | } | |
4287 | } | |
4288 | ||
4289 | continue; | |
4290 | } | |
4291 | ||
4292 | /* This is a final link. */ | |
4293 | ||
4294 | h = NULL; | |
4295 | sym = NULL; | |
4296 | sec = NULL; | |
3765b1be | 4297 | undef_weak_ref = false; |
252b5132 RH |
4298 | |
4299 | if (r_symndx < symtab_hdr->sh_info) | |
4300 | { | |
4301 | sym = local_syms + r_symndx; | |
4302 | sec = local_sections[r_symndx]; | |
3765b1be RH |
4303 | value = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
4304 | ||
4305 | gotent = alpha_elf_tdata(input_bfd)->local_got_entries[r_symndx]; | |
4306 | ||
4307 | /* Need to adjust local GOT entries' addends for SEC_MERGE | |
4308 | unless it has been done already. */ | |
4309 | if ((sec->flags & SEC_MERGE) | |
4310 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION | |
4311 | && (elf_section_data (sec)->sec_info_type | |
4312 | == ELF_INFO_TYPE_MERGE) | |
4313 | && !gotent->reloc_xlated) | |
4314 | { | |
4315 | struct alpha_elf_got_entry *ent; | |
4316 | asection *msec; | |
4317 | ||
4318 | for (ent = gotent; ent; ent = ent->next) | |
4319 | { | |
4320 | ent->reloc_xlated = 1; | |
4321 | if (ent->use_count == 0) | |
4322 | continue; | |
4323 | msec = sec; | |
4324 | ent->addend = | |
4325 | _bfd_merged_section_offset (output_bfd, &msec, | |
4326 | elf_section_data (sec)-> | |
4327 | sec_info, | |
4328 | sym->st_value + ent->addend, | |
4329 | (bfd_vma) 0); | |
4330 | ent->addend -= sym->st_value; | |
4331 | ent->addend += msec->output_section->vma | |
4332 | + msec->output_offset | |
4333 | - sec->output_section->vma | |
4334 | - sec->output_offset; | |
4335 | } | |
4336 | } | |
4337 | ||
4338 | dynamic_symbol_p = false; | |
252b5132 RH |
4339 | } |
4340 | else | |
4341 | { | |
4342 | h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info]; | |
4343 | ||
4344 | while (h->root.root.type == bfd_link_hash_indirect | |
4345 | || h->root.root.type == bfd_link_hash_warning) | |
4346 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; | |
4347 | ||
3765b1be | 4348 | value = 0; |
252b5132 RH |
4349 | if (h->root.root.type == bfd_link_hash_defined |
4350 | || h->root.root.type == bfd_link_hash_defweak) | |
4351 | { | |
4352 | sec = h->root.root.u.def.section; | |
4353 | ||
3765b1be RH |
4354 | /* Detect the cases that sym_sec->output_section is |
4355 | expected to be NULL -- all cases in which the symbol | |
4356 | is defined in another shared module. This includes | |
4357 | PLT relocs for which we've created a PLT entry and | |
4358 | other relocs for which we're prepared to create | |
4359 | dynamic relocations. */ | |
4360 | /* ??? Just accept it NULL and continue. */ | |
4361 | ||
4362 | if (sec->output_section != NULL) | |
4363 | value = (h->root.root.u.def.value | |
4364 | + sec->output_section->vma | |
4365 | + sec->output_offset); | |
252b5132 RH |
4366 | } |
4367 | else if (h->root.root.type == bfd_link_hash_undefweak) | |
3765b1be | 4368 | undef_weak_ref = true; |
671bae9c NC |
4369 | else if (info->shared |
4370 | && (!info->symbolic || info->allow_shlib_undefined) | |
3a27a730 | 4371 | && !info->no_undefined |
edb72b3b | 4372 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
3765b1be | 4373 | ; |
252b5132 RH |
4374 | else |
4375 | { | |
4376 | if (!((*info->callbacks->undefined_symbol) | |
4377 | (info, h->root.root.root.string, input_bfd, | |
5cc7c785 | 4378 | input_section, rel->r_offset, |
3a27a730 | 4379 | (!info->shared || info->no_undefined |
edb72b3b | 4380 | || ELF_ST_VISIBILITY (h->root.other))))) |
3765b1be RH |
4381 | return false; |
4382 | ret_val = false; | |
4383 | continue; | |
252b5132 | 4384 | } |
3765b1be RH |
4385 | |
4386 | dynamic_symbol_p = alpha_elf_dynamic_symbol_p (&h->root, info); | |
4387 | gotent = h->got_entries; | |
252b5132 | 4388 | } |
3765b1be | 4389 | |
252b5132 | 4390 | addend = rel->r_addend; |
3765b1be RH |
4391 | value += addend; |
4392 | ||
4393 | /* Search for the proper got entry. */ | |
4394 | for (; gotent ; gotent = gotent->next) | |
4395 | if (gotent->gotobj == gotobj | |
4396 | && gotent->reloc_type == r_type | |
4397 | && gotent->addend == addend) | |
4398 | break; | |
252b5132 RH |
4399 | |
4400 | switch (r_type) | |
4401 | { | |
4402 | case R_ALPHA_GPDISP: | |
4403 | { | |
4404 | bfd_byte *p_ldah, *p_lda; | |
4405 | ||
4406 | BFD_ASSERT(gp != 0); | |
4407 | ||
3765b1be RH |
4408 | value = (input_section->output_section->vma |
4409 | + input_section->output_offset | |
4410 | + rel->r_offset); | |
252b5132 | 4411 | |
3765b1be | 4412 | p_ldah = contents + rel->r_offset; |
252b5132 RH |
4413 | p_lda = p_ldah + rel->r_addend; |
4414 | ||
3765b1be | 4415 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - value, |
252b5132 RH |
4416 | p_ldah, p_lda); |
4417 | } | |
4418 | break; | |
4419 | ||
252b5132 | 4420 | case R_ALPHA_LITERAL: |
3765b1be RH |
4421 | BFD_ASSERT(sgot != NULL); |
4422 | BFD_ASSERT(gp != 0); | |
4423 | BFD_ASSERT(gotent != NULL); | |
4424 | BFD_ASSERT(gotent->use_count >= 1); | |
f7460f5f | 4425 | |
3765b1be RH |
4426 | if (!gotent->reloc_done) |
4427 | { | |
4428 | gotent->reloc_done = 1; | |
252b5132 | 4429 | |
3765b1be RH |
4430 | bfd_put_64 (output_bfd, value, |
4431 | sgot->contents + gotent->got_offset); | |
252b5132 | 4432 | |
3765b1be RH |
4433 | /* If the symbol has been forced local, output a |
4434 | RELATIVE reloc, otherwise it will be handled in | |
4435 | finish_dynamic_symbol. */ | |
4436 | if (info->shared && !dynamic_symbol_p) | |
4437 | { | |
4438 | Elf_Internal_Rela outrel; | |
252b5132 | 4439 | |
3765b1be | 4440 | BFD_ASSERT(srelgot != NULL); |
252b5132 | 4441 | |
3765b1be RH |
4442 | outrel.r_offset = (sgot->output_section->vma |
4443 | + sgot->output_offset | |
4444 | + gotent->got_offset); | |
4445 | outrel.r_info = ELF64_R_INFO (0, R_ALPHA_RELATIVE); | |
4446 | outrel.r_addend = value; | |
252b5132 | 4447 | |
3765b1be RH |
4448 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
4449 | ((Elf64_External_Rela *) | |
4450 | srelgot->contents) | |
4451 | + srelgot->reloc_count++); | |
4452 | BFD_ASSERT (sizeof (Elf64_External_Rela) | |
4453 | * srelgot->reloc_count | |
4454 | <= srelgot->_cooked_size); | |
4455 | } | |
4456 | } | |
252b5132 | 4457 | |
3765b1be RH |
4458 | value = (sgot->output_section->vma |
4459 | + sgot->output_offset | |
4460 | + gotent->got_offset); | |
4461 | value -= gp; | |
252b5132 RH |
4462 | goto default_reloc; |
4463 | ||
dfe57ca0 | 4464 | case R_ALPHA_GPREL16: |
252b5132 RH |
4465 | case R_ALPHA_GPREL32: |
4466 | case R_ALPHA_GPRELLOW: | |
3765b1be | 4467 | if (dynamic_symbol_p) |
f16fbd61 RH |
4468 | { |
4469 | (*_bfd_error_handler) | |
4470 | (_("%s: gp-relative relocation against dynamic symbol %s"), | |
8f615d07 | 4471 | bfd_archive_filename (input_bfd), h->root.root.root.string); |
f16fbd61 RH |
4472 | ret_val = false; |
4473 | } | |
252b5132 | 4474 | BFD_ASSERT(gp != 0); |
3765b1be | 4475 | value -= gp; |
252b5132 RH |
4476 | goto default_reloc; |
4477 | ||
4478 | case R_ALPHA_GPRELHIGH: | |
3765b1be | 4479 | if (dynamic_symbol_p) |
f16fbd61 RH |
4480 | { |
4481 | (*_bfd_error_handler) | |
4482 | (_("%s: gp-relative relocation against dynamic symbol %s"), | |
8f615d07 | 4483 | bfd_archive_filename (input_bfd), h->root.root.root.string); |
f16fbd61 RH |
4484 | ret_val = false; |
4485 | } | |
252b5132 | 4486 | BFD_ASSERT(gp != 0); |
3765b1be RH |
4487 | value -= gp; |
4488 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
252b5132 RH |
4489 | goto default_reloc; |
4490 | ||
252b5132 | 4491 | case R_ALPHA_HINT: |
f94952df RH |
4492 | /* A call to a dynamic symbol is definitely out of range of |
4493 | the 16-bit displacement. Don't bother writing anything. */ | |
3765b1be | 4494 | if (dynamic_symbol_p) |
f94952df RH |
4495 | { |
4496 | r = bfd_reloc_ok; | |
4497 | break; | |
4498 | } | |
3765b1be RH |
4499 | /* The regular PC-relative stuff measures from the start of |
4500 | the instruction rather than the end. */ | |
4501 | value -= 4; | |
4502 | goto default_reloc; | |
f94952df RH |
4503 | |
4504 | case R_ALPHA_BRADDR: | |
3765b1be RH |
4505 | if (dynamic_symbol_p) |
4506 | { | |
4507 | (*_bfd_error_handler) | |
4508 | (_("%s: pc-relative relocation against dynamic symbol %s"), | |
4509 | bfd_archive_filename (input_bfd), h->root.root.root.string); | |
4510 | ret_val = false; | |
4511 | } | |
252b5132 RH |
4512 | /* The regular PC-relative stuff measures from the start of |
4513 | the instruction rather than the end. */ | |
3765b1be | 4514 | value -= 4; |
252b5132 RH |
4515 | goto default_reloc; |
4516 | ||
7793f4d0 RH |
4517 | case R_ALPHA_BRSGP: |
4518 | { | |
4519 | int other; | |
4520 | const char *name; | |
4521 | ||
4522 | /* The regular PC-relative stuff measures from the start of | |
4523 | the instruction rather than the end. */ | |
3765b1be | 4524 | value -= 4; |
7793f4d0 | 4525 | |
ccf00ab6 RH |
4526 | /* The source and destination gp must be the same. Note that |
4527 | the source will always have an assigned gp, since we forced | |
4528 | one in check_relocs, but that the destination may not, as | |
4529 | it might not have had any relocations at all. Also take | |
4530 | care not to crash if H is an undefined symbol. */ | |
4531 | if (h != NULL && sec != NULL | |
4532 | && alpha_elf_tdata (sec->owner)->gotobj | |
7793f4d0 RH |
4533 | && gotobj != alpha_elf_tdata (sec->owner)->gotobj) |
4534 | { | |
7793f4d0 RH |
4535 | (*_bfd_error_handler) |
4536 | (_("%s: change in gp: BRSGP %s"), | |
ccf00ab6 | 4537 | bfd_archive_filename (input_bfd), h->root.root.root.string); |
7793f4d0 RH |
4538 | ret_val = false; |
4539 | } | |
4540 | ||
4541 | /* The symbol should be marked either NOPV or STD_GPLOAD. */ | |
4542 | if (h != NULL) | |
4543 | other = h->root.other; | |
4544 | else | |
4545 | other = sym->st_other; | |
4546 | switch (other & STO_ALPHA_STD_GPLOAD) | |
4547 | { | |
4548 | case STO_ALPHA_NOPV: | |
4549 | break; | |
4550 | case STO_ALPHA_STD_GPLOAD: | |
4551 | addend += 8; | |
4552 | break; | |
4553 | default: | |
4554 | if (h != NULL) | |
4555 | name = h->root.root.root.string; | |
4556 | else | |
4557 | { | |
4558 | name = (bfd_elf_string_from_elf_section | |
4559 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4560 | if (name == NULL) | |
4561 | name = _("<unknown>"); | |
4562 | else if (name[0] == 0) | |
4563 | name = bfd_section_name (input_bfd, sec); | |
4564 | } | |
4565 | (*_bfd_error_handler) | |
4566 | (_("%s: !samegp reloc against symbol without .prologue: %s"), | |
4567 | bfd_archive_filename (input_bfd), name); | |
4568 | ret_val = false; | |
4569 | break; | |
4570 | } | |
4571 | ||
4572 | goto default_reloc; | |
4573 | } | |
4574 | ||
252b5132 RH |
4575 | case R_ALPHA_REFLONG: |
4576 | case R_ALPHA_REFQUAD: | |
3765b1be RH |
4577 | case R_ALPHA_DTPREL64: |
4578 | case R_ALPHA_TPREL64: | |
252b5132 RH |
4579 | { |
4580 | Elf_Internal_Rela outrel; | |
252b5132 RH |
4581 | |
4582 | /* Careful here to remember RELATIVE relocations for global | |
4583 | variables for symbolic shared objects. */ | |
4584 | ||
3765b1be | 4585 | if (dynamic_symbol_p) |
252b5132 RH |
4586 | { |
4587 | BFD_ASSERT(h->root.dynindx != -1); | |
3765b1be | 4588 | outrel.r_info = ELF64_R_INFO (h->root.dynindx, r_type); |
252b5132 | 4589 | outrel.r_addend = addend; |
3765b1be RH |
4590 | addend = 0, value = 0; |
4591 | } | |
4592 | else if (r_type == R_ALPHA_DTPREL64) | |
4593 | { | |
4594 | BFD_ASSERT(tls_segment != NULL); | |
4595 | value -= dtp_base; | |
4596 | goto default_reloc; | |
4597 | } | |
4598 | else if (r_type == R_ALPHA_TPREL64) | |
4599 | { | |
4600 | BFD_ASSERT(tls_segment != NULL); | |
4601 | value -= dtp_base; | |
4602 | goto default_reloc; | |
252b5132 | 4603 | } |
ec338859 AM |
4604 | else if (info->shared |
4605 | && r_symndx != 0 | |
4606 | && (input_section->flags & SEC_ALLOC)) | |
252b5132 | 4607 | { |
3765b1be RH |
4608 | if (r_type == R_ALPHA_REFLONG) |
4609 | { | |
4610 | (*_bfd_error_handler) | |
4611 | (_("%s: unhandled dynamic relocation against %s"), | |
4612 | bfd_archive_filename (input_bfd), | |
4613 | h->root.root.root.string); | |
4614 | ret_val = false; | |
4615 | } | |
4616 | outrel.r_info = ELF64_R_INFO (0, R_ALPHA_RELATIVE); | |
4617 | outrel.r_addend = value; | |
252b5132 RH |
4618 | } |
4619 | else | |
4620 | goto default_reloc; | |
4621 | ||
3765b1be | 4622 | BFD_ASSERT(srel != NULL); |
252b5132 | 4623 | |
c629eae0 JJ |
4624 | outrel.r_offset = |
4625 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
4626 | rel->r_offset); | |
0bb2d96a | 4627 | if ((outrel.r_offset | 1) != (bfd_vma) -1) |
252b5132 RH |
4628 | outrel.r_offset += (input_section->output_section->vma |
4629 | + input_section->output_offset); | |
4630 | else | |
4631 | memset (&outrel, 0, sizeof outrel); | |
4632 | ||
4633 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
4634 | ((Elf64_External_Rela *) | |
4635 | srel->contents) | |
4636 | + srel->reloc_count++); | |
fe8bc63d | 4637 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count |
252b5132 RH |
4638 | <= srel->_cooked_size); |
4639 | } | |
4640 | goto default_reloc; | |
4641 | ||
3765b1be | 4642 | case R_ALPHA_SREL16: |
84de6048 RH |
4643 | case R_ALPHA_SREL32: |
4644 | case R_ALPHA_SREL64: | |
3765b1be RH |
4645 | if (dynamic_symbol_p) |
4646 | { | |
4647 | (*_bfd_error_handler) | |
4648 | (_("%s: pc-relative relocation against dynamic symbol %s"), | |
4649 | bfd_archive_filename (input_bfd), h->root.root.root.string); | |
4650 | ret_val = false; | |
4651 | } | |
4652 | ||
84de6048 RH |
4653 | /* ??? .eh_frame references to discarded sections will be smashed |
4654 | to relocations against SHN_UNDEF. The .eh_frame format allows | |
4655 | NULL to be encoded as 0 in any format, so this works here. */ | |
4656 | if (r_symndx == 0) | |
4657 | howto = (elf64_alpha_howto_table | |
4658 | + (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG)); | |
4659 | goto default_reloc; | |
4660 | ||
3765b1be RH |
4661 | case R_ALPHA_TLSLDM: |
4662 | /* Ignore the symbol for the relocation. The result is always | |
4663 | the current module. */ | |
4664 | dynamic_symbol_p = 0; | |
4665 | /* FALLTHRU */ | |
4666 | ||
4667 | case R_ALPHA_TLSGD: | |
4668 | if (!gotent->reloc_done) | |
4669 | { | |
4670 | gotent->reloc_done = 1; | |
4671 | ||
4672 | /* Note that the module index for the main program is 1. */ | |
4673 | bfd_put_64 (output_bfd, !info->shared && !dynamic_symbol_p, | |
4674 | sgot->contents + gotent->got_offset); | |
4675 | ||
4676 | /* If the symbol has been forced local, output a | |
4677 | DTPMOD64 reloc, otherwise it will be handled in | |
4678 | finish_dynamic_symbol. */ | |
4679 | if (info->shared && !dynamic_symbol_p) | |
4680 | { | |
4681 | Elf_Internal_Rela outrel; | |
4682 | ||
4683 | BFD_ASSERT(srelgot != NULL); | |
4684 | ||
4685 | outrel.r_offset = (sgot->output_section->vma | |
4686 | + sgot->output_offset | |
4687 | + gotent->got_offset); | |
4688 | /* ??? Proper dynindx here. */ | |
4689 | outrel.r_info = ELF64_R_INFO (0, R_ALPHA_DTPMOD64); | |
4690 | outrel.r_addend = 0; | |
4691 | ||
4692 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
4693 | ((Elf64_External_Rela *) | |
4694 | srelgot->contents) | |
4695 | + srelgot->reloc_count++); | |
4696 | BFD_ASSERT (sizeof (Elf64_External_Rela) | |
4697 | * srelgot->reloc_count | |
4698 | <= srelgot->_cooked_size); | |
4699 | } | |
4700 | ||
4701 | if (dynamic_symbol_p || r_type == R_ALPHA_TLSLDM) | |
4702 | value = 0; | |
4703 | else | |
4704 | { | |
4705 | BFD_ASSERT(tls_segment != NULL); | |
4706 | value -= dtp_base; | |
4707 | } | |
4708 | bfd_put_64 (output_bfd, value, | |
4709 | sgot->contents + gotent->got_offset + 8); | |
4710 | } | |
4711 | ||
4712 | value = (sgot->output_section->vma | |
4713 | + sgot->output_offset | |
4714 | + gotent->got_offset); | |
4715 | value -= gp; | |
4716 | goto default_reloc; | |
4717 | ||
4718 | case R_ALPHA_DTPRELHI: | |
4719 | case R_ALPHA_DTPRELLO: | |
4720 | case R_ALPHA_DTPREL16: | |
4721 | if (dynamic_symbol_p) | |
4722 | { | |
4723 | (*_bfd_error_handler) | |
4724 | (_("%s: dtp-relative relocation against dynamic symbol %s"), | |
4725 | bfd_archive_filename (input_bfd), h->root.root.root.string); | |
4726 | ret_val = false; | |
4727 | } | |
4728 | BFD_ASSERT(tls_segment != NULL); | |
4729 | value -= dtp_base; | |
9e756d64 RH |
4730 | if (r_type == R_ALPHA_DTPRELHI) |
4731 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4732 | goto default_reloc; |
4733 | ||
4734 | case R_ALPHA_TPRELHI: | |
4735 | case R_ALPHA_TPRELLO: | |
4736 | case R_ALPHA_TPREL16: | |
9e756d64 RH |
4737 | if (info->shared) |
4738 | { | |
4739 | (*_bfd_error_handler) | |
4740 | (_("%s: TLS local exec code cannot be linked into shared objects"), | |
4741 | bfd_archive_filename (input_bfd)); | |
4742 | ret_val = false; | |
4743 | } | |
4744 | else if (dynamic_symbol_p) | |
3765b1be RH |
4745 | { |
4746 | (*_bfd_error_handler) | |
4747 | (_("%s: tp-relative relocation against dynamic symbol %s"), | |
4748 | bfd_archive_filename (input_bfd), h->root.root.root.string); | |
4749 | ret_val = false; | |
4750 | } | |
4751 | BFD_ASSERT(tls_segment != NULL); | |
4752 | value -= tp_base; | |
9e756d64 RH |
4753 | if (r_type == R_ALPHA_TPRELHI) |
4754 | value = ((bfd_signed_vma) value >> 16) + ((value >> 15) & 1); | |
3765b1be RH |
4755 | goto default_reloc; |
4756 | ||
4757 | case R_ALPHA_GOTDTPREL: | |
4758 | case R_ALPHA_GOTTPREL: | |
4759 | BFD_ASSERT(sgot != NULL); | |
4760 | BFD_ASSERT(gp != 0); | |
4761 | BFD_ASSERT(gotent != NULL); | |
4762 | BFD_ASSERT(gotent->use_count >= 1); | |
4763 | ||
4764 | if (!gotent->reloc_done) | |
4765 | { | |
4766 | gotent->reloc_done = 1; | |
4767 | ||
4768 | if (dynamic_symbol_p) | |
4769 | value = 0; | |
4770 | else | |
4771 | { | |
4772 | BFD_ASSERT(tls_segment != NULL); | |
4773 | value -= (r_type == R_ALPHA_GOTDTPREL ? dtp_base : tp_base); | |
4774 | } | |
4775 | bfd_put_64 (output_bfd, value, | |
4776 | sgot->contents + gotent->got_offset); | |
4777 | } | |
4778 | ||
4779 | value = (sgot->output_section->vma | |
4780 | + sgot->output_offset | |
4781 | + gotent->got_offset); | |
4782 | value -= gp; | |
4783 | goto default_reloc; | |
4784 | ||
252b5132 RH |
4785 | default: |
4786 | default_reloc: | |
4787 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
3765b1be | 4788 | contents, rel->r_offset, value, 0); |
252b5132 RH |
4789 | break; |
4790 | } | |
4791 | ||
4792 | switch (r) | |
4793 | { | |
4794 | case bfd_reloc_ok: | |
4795 | break; | |
4796 | ||
4797 | case bfd_reloc_overflow: | |
4798 | { | |
4799 | const char *name; | |
4800 | ||
ed4de5e2 JJ |
4801 | /* Don't warn if the overflow is due to pc relative reloc |
4802 | against discarded section. Section optimization code should | |
4803 | handle it. */ | |
4804 | ||
4805 | if (r_symndx < symtab_hdr->sh_info | |
4806 | && sec != NULL && howto->pc_relative | |
4807 | && elf_discarded_section (sec)) | |
4808 | break; | |
4809 | ||
252b5132 RH |
4810 | if (h != NULL) |
4811 | name = h->root.root.root.string; | |
4812 | else | |
4813 | { | |
4814 | name = (bfd_elf_string_from_elf_section | |
4815 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
4816 | if (name == NULL) | |
4817 | return false; | |
4818 | if (*name == '\0') | |
4819 | name = bfd_section_name (input_bfd, sec); | |
4820 | } | |
4821 | if (! ((*info->callbacks->reloc_overflow) | |
4822 | (info, name, howto->name, (bfd_vma) 0, | |
4823 | input_bfd, input_section, rel->r_offset))) | |
f16fbd61 | 4824 | ret_val = false; |
252b5132 RH |
4825 | } |
4826 | break; | |
4827 | ||
4828 | default: | |
4829 | case bfd_reloc_outofrange: | |
4830 | abort (); | |
4831 | } | |
4832 | } | |
4833 | ||
f16fbd61 | 4834 | return ret_val; |
252b5132 RH |
4835 | } |
4836 | ||
4837 | /* Finish up dynamic symbol handling. We set the contents of various | |
4838 | dynamic sections here. */ | |
4839 | ||
4840 | static boolean | |
4841 | elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym) | |
4842 | bfd *output_bfd; | |
4843 | struct bfd_link_info *info; | |
4844 | struct elf_link_hash_entry *h; | |
4845 | Elf_Internal_Sym *sym; | |
4846 | { | |
4847 | bfd *dynobj = elf_hash_table(info)->dynobj; | |
4848 | ||
4849 | if (h->plt.offset != MINUS_ONE) | |
4850 | { | |
4851 | /* Fill in the .plt entry for this symbol. */ | |
4852 | asection *splt, *sgot, *srel; | |
4853 | Elf_Internal_Rela outrel; | |
4854 | bfd_vma got_addr, plt_addr; | |
4855 | bfd_vma plt_index; | |
4856 | struct alpha_elf_got_entry *gotent; | |
4857 | ||
4858 | BFD_ASSERT (h->dynindx != -1); | |
4859 | ||
4860 | /* The first .got entry will be updated by the .plt with the | |
4861 | address of the target function. */ | |
4862 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; | |
4863 | BFD_ASSERT (gotent && gotent->addend == 0); | |
4864 | ||
4865 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
4866 | BFD_ASSERT (splt != NULL); | |
4867 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
4868 | BFD_ASSERT (srel != NULL); | |
4869 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
4870 | BFD_ASSERT (sgot != NULL); | |
4871 | ||
4872 | got_addr = (sgot->output_section->vma | |
4873 | + sgot->output_offset | |
4874 | + gotent->got_offset); | |
4875 | plt_addr = (splt->output_section->vma | |
4876 | + splt->output_offset | |
4877 | + h->plt.offset); | |
4878 | ||
4879 | plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
4880 | ||
4881 | /* Fill in the entry in the procedure linkage table. */ | |
4882 | { | |
dc810e39 | 4883 | bfd_vma insn1, insn2, insn3; |
252b5132 RH |
4884 | |
4885 | insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff); | |
4886 | insn2 = PLT_ENTRY_WORD2; | |
4887 | insn3 = PLT_ENTRY_WORD3; | |
4888 | ||
4889 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset); | |
4890 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4); | |
4891 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8); | |
4892 | } | |
4893 | ||
4894 | /* Fill in the entry in the .rela.plt section. */ | |
4895 | outrel.r_offset = got_addr; | |
4896 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); | |
4897 | outrel.r_addend = 0; | |
4898 | ||
4899 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
4900 | ((Elf64_External_Rela *)srel->contents | |
4901 | + plt_index)); | |
4902 | ||
4903 | if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
4904 | { | |
4905 | /* Mark the symbol as undefined, rather than as defined in the | |
4906 | .plt section. Leave the value alone. */ | |
4907 | sym->st_shndx = SHN_UNDEF; | |
4908 | } | |
4909 | ||
4910 | /* Fill in the entries in the .got. */ | |
4911 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); | |
4912 | ||
4913 | /* Subsequent .got entries will continue to bounce through the .plt. */ | |
4914 | if (gotent->next) | |
4915 | { | |
4916 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4917 | BFD_ASSERT (! info->shared || srel != NULL); | |
4918 | ||
4919 | gotent = gotent->next; | |
4920 | do | |
4921 | { | |
4922 | sgot = alpha_elf_tdata(gotent->gotobj)->got; | |
4923 | BFD_ASSERT(sgot != NULL); | |
4924 | BFD_ASSERT(gotent->addend == 0); | |
4925 | ||
4926 | bfd_put_64 (output_bfd, plt_addr, | |
4927 | sgot->contents + gotent->got_offset); | |
4928 | ||
4929 | if (info->shared) | |
4930 | { | |
4931 | outrel.r_offset = (sgot->output_section->vma | |
4932 | + sgot->output_offset | |
4933 | + gotent->got_offset); | |
4934 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); | |
28cfee26 | 4935 | outrel.r_addend = plt_addr; |
252b5132 RH |
4936 | |
4937 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
4938 | ((Elf64_External_Rela *) | |
4939 | srel->contents) | |
4940 | + srel->reloc_count++); | |
fe8bc63d | 4941 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count |
252b5132 RH |
4942 | <= srel->_cooked_size); |
4943 | } | |
4944 | ||
4945 | gotent = gotent->next; | |
4946 | } | |
4947 | while (gotent != NULL); | |
4948 | } | |
4949 | } | |
4950 | else if (alpha_elf_dynamic_symbol_p (h, info)) | |
4951 | { | |
4952 | /* Fill in the dynamic relocations for this symbol's .got entries. */ | |
4953 | asection *srel; | |
4954 | Elf_Internal_Rela outrel; | |
4955 | struct alpha_elf_got_entry *gotent; | |
4956 | ||
4957 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4958 | BFD_ASSERT (srel != NULL); | |
4959 | ||
252b5132 RH |
4960 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
4961 | gotent != NULL; | |
4962 | gotent = gotent->next) | |
4963 | { | |
f44f99a5 | 4964 | asection *sgot; |
3765b1be RH |
4965 | int r_type; |
4966 | ||
f44f99a5 RH |
4967 | if (gotent->use_count == 0) |
4968 | continue; | |
4969 | ||
4970 | sgot = alpha_elf_tdata (gotent->gotobj)->got; | |
252b5132 RH |
4971 | outrel.r_offset = (sgot->output_section->vma |
4972 | + sgot->output_offset | |
4973 | + gotent->got_offset); | |
3765b1be RH |
4974 | |
4975 | r_type = gotent->reloc_type; | |
4976 | switch (r_type) | |
4977 | { | |
4978 | case R_ALPHA_LITERAL: | |
4979 | r_type = R_ALPHA_GLOB_DAT; | |
4980 | break; | |
4981 | case R_ALPHA_TLSGD: | |
4982 | r_type = R_ALPHA_DTPMOD64; | |
4983 | break; | |
4984 | case R_ALPHA_GOTDTPREL: | |
4985 | r_type = R_ALPHA_DTPREL64; | |
4986 | break; | |
4987 | case R_ALPHA_GOTTPREL: | |
4988 | r_type = R_ALPHA_TPREL64; | |
4989 | break; | |
4990 | case R_ALPHA_TLSLDM: | |
4991 | default: | |
4992 | abort (); | |
4993 | } | |
4994 | ||
4995 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); | |
252b5132 RH |
4996 | outrel.r_addend = gotent->addend; |
4997 | ||
4998 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
4999 | ((Elf64_External_Rela *)srel->contents | |
5000 | + srel->reloc_count++)); | |
3765b1be RH |
5001 | |
5002 | if (gotent->reloc_type == R_ALPHA_TLSGD) | |
5003 | { | |
5004 | outrel.r_offset += 8; | |
5005 | outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_DTPREL64); | |
5006 | ||
5007 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, | |
5008 | ((Elf64_External_Rela *)srel->contents | |
5009 | + srel->reloc_count++)); | |
5010 | } | |
5011 | ||
fe8bc63d | 5012 | BFD_ASSERT (sizeof (Elf64_External_Rela) * srel->reloc_count |
252b5132 RH |
5013 | <= srel->_cooked_size); |
5014 | } | |
5015 | } | |
5016 | ||
5017 | /* Mark some specially defined symbols as absolute. */ | |
5018 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
5019 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 | |
5020 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) | |
5021 | sym->st_shndx = SHN_ABS; | |
5022 | ||
5023 | return true; | |
5024 | } | |
5025 | ||
5026 | /* Finish up the dynamic sections. */ | |
5027 | ||
5028 | static boolean | |
5029 | elf64_alpha_finish_dynamic_sections (output_bfd, info) | |
5030 | bfd *output_bfd; | |
5031 | struct bfd_link_info *info; | |
5032 | { | |
5033 | bfd *dynobj; | |
5034 | asection *sdyn; | |
5035 | ||
5036 | dynobj = elf_hash_table (info)->dynobj; | |
5037 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
5038 | ||
5039 | if (elf_hash_table (info)->dynamic_sections_created) | |
5040 | { | |
5041 | asection *splt; | |
5042 | Elf64_External_Dyn *dyncon, *dynconend; | |
5043 | ||
5044 | splt = bfd_get_section_by_name (dynobj, ".plt"); | |
5045 | BFD_ASSERT (splt != NULL && sdyn != NULL); | |
5046 | ||
5047 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
5048 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
5049 | for (; dyncon < dynconend; dyncon++) | |
5050 | { | |
5051 | Elf_Internal_Dyn dyn; | |
5052 | const char *name; | |
5053 | asection *s; | |
5054 | ||
5055 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
5056 | ||
5057 | switch (dyn.d_tag) | |
5058 | { | |
5059 | case DT_PLTGOT: | |
5060 | name = ".plt"; | |
5061 | goto get_vma; | |
5062 | case DT_PLTRELSZ: | |
5063 | name = ".rela.plt"; | |
5064 | goto get_size; | |
5065 | case DT_JMPREL: | |
5066 | name = ".rela.plt"; | |
5067 | goto get_vma; | |
5068 | ||
5069 | case DT_RELASZ: | |
5070 | /* My interpretation of the TIS v1.1 ELF document indicates | |
5071 | that RELASZ should not include JMPREL. This is not what | |
5072 | the rest of the BFD does. It is, however, what the | |
5073 | glibc ld.so wants. Do this fixup here until we found | |
5074 | out who is right. */ | |
5075 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); | |
5076 | if (s) | |
5077 | { | |
5078 | dyn.d_un.d_val -= | |
5079 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
5080 | } | |
5081 | break; | |
5082 | ||
5083 | get_vma: | |
5084 | s = bfd_get_section_by_name (output_bfd, name); | |
5085 | dyn.d_un.d_ptr = (s ? s->vma : 0); | |
5086 | break; | |
5087 | ||
5088 | get_size: | |
5089 | s = bfd_get_section_by_name (output_bfd, name); | |
5090 | dyn.d_un.d_val = | |
5091 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); | |
5092 | break; | |
5093 | } | |
5094 | ||
5095 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5096 | } | |
5097 | ||
5098 | /* Initialize the PLT0 entry */ | |
5099 | if (splt->_raw_size > 0) | |
5100 | { | |
5101 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); | |
5102 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); | |
5103 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); | |
5104 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); | |
5105 | ||
5106 | /* The next two words will be filled in by ld.so */ | |
dc810e39 AM |
5107 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 16); |
5108 | bfd_put_64 (output_bfd, (bfd_vma) 0, splt->contents + 24); | |
252b5132 RH |
5109 | |
5110 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
5111 | PLT_HEADER_SIZE; | |
5112 | } | |
5113 | } | |
5114 | ||
252b5132 RH |
5115 | return true; |
5116 | } | |
5117 | ||
96e2734b RH |
5118 | /* We need to use a special link routine to handle the .mdebug section. |
5119 | We need to merge all instances of these sections together, not write | |
5120 | them all out sequentially. */ | |
252b5132 RH |
5121 | |
5122 | static boolean | |
5123 | elf64_alpha_final_link (abfd, info) | |
5124 | bfd *abfd; | |
5125 | struct bfd_link_info *info; | |
5126 | { | |
5127 | asection *o; | |
5128 | struct bfd_link_order *p; | |
96e2734b | 5129 | asection *mdebug_sec; |
252b5132 RH |
5130 | struct ecoff_debug_info debug; |
5131 | const struct ecoff_debug_swap *swap | |
5132 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; | |
5133 | HDRR *symhdr = &debug.symbolic_header; | |
5134 | PTR mdebug_handle = NULL; | |
5135 | ||
96e2734b | 5136 | /* Go through the sections and collect the mdebug information. */ |
252b5132 | 5137 | mdebug_sec = NULL; |
252b5132 RH |
5138 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
5139 | { | |
252b5132 RH |
5140 | if (strcmp (o->name, ".mdebug") == 0) |
5141 | { | |
5142 | struct extsym_info einfo; | |
5143 | ||
5144 | /* We have found the .mdebug section in the output file. | |
5145 | Look through all the link_orders comprising it and merge | |
5146 | the information together. */ | |
5147 | symhdr->magic = swap->sym_magic; | |
5148 | /* FIXME: What should the version stamp be? */ | |
5149 | symhdr->vstamp = 0; | |
5150 | symhdr->ilineMax = 0; | |
5151 | symhdr->cbLine = 0; | |
5152 | symhdr->idnMax = 0; | |
5153 | symhdr->ipdMax = 0; | |
5154 | symhdr->isymMax = 0; | |
5155 | symhdr->ioptMax = 0; | |
5156 | symhdr->iauxMax = 0; | |
5157 | symhdr->issMax = 0; | |
5158 | symhdr->issExtMax = 0; | |
5159 | symhdr->ifdMax = 0; | |
5160 | symhdr->crfd = 0; | |
5161 | symhdr->iextMax = 0; | |
5162 | ||
5163 | /* We accumulate the debugging information itself in the | |
5164 | debug_info structure. */ | |
5165 | debug.line = NULL; | |
5166 | debug.external_dnr = NULL; | |
5167 | debug.external_pdr = NULL; | |
5168 | debug.external_sym = NULL; | |
5169 | debug.external_opt = NULL; | |
5170 | debug.external_aux = NULL; | |
5171 | debug.ss = NULL; | |
5172 | debug.ssext = debug.ssext_end = NULL; | |
5173 | debug.external_fdr = NULL; | |
5174 | debug.external_rfd = NULL; | |
5175 | debug.external_ext = debug.external_ext_end = NULL; | |
5176 | ||
5177 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); | |
5178 | if (mdebug_handle == (PTR) NULL) | |
5179 | return false; | |
5180 | ||
5181 | if (1) | |
5182 | { | |
5183 | asection *s; | |
5184 | EXTR esym; | |
52b9d213 | 5185 | bfd_vma last = 0; |
252b5132 RH |
5186 | unsigned int i; |
5187 | static const char * const name[] = | |
5188 | { | |
5189 | ".text", ".init", ".fini", ".data", | |
5190 | ".rodata", ".sdata", ".sbss", ".bss" | |
5191 | }; | |
5192 | static const int sc[] = { scText, scInit, scFini, scData, | |
5193 | scRData, scSData, scSBss, scBss }; | |
5194 | ||
5195 | esym.jmptbl = 0; | |
5196 | esym.cobol_main = 0; | |
5197 | esym.weakext = 0; | |
5198 | esym.reserved = 0; | |
5199 | esym.ifd = ifdNil; | |
5200 | esym.asym.iss = issNil; | |
5201 | esym.asym.st = stLocal; | |
5202 | esym.asym.reserved = 0; | |
5203 | esym.asym.index = indexNil; | |
5204 | for (i = 0; i < 8; i++) | |
5205 | { | |
5206 | esym.asym.sc = sc[i]; | |
5207 | s = bfd_get_section_by_name (abfd, name[i]); | |
5208 | if (s != NULL) | |
5209 | { | |
5210 | esym.asym.value = s->vma; | |
5211 | last = s->vma + s->_raw_size; | |
5212 | } | |
5213 | else | |
5214 | esym.asym.value = last; | |
5215 | ||
5216 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, | |
5217 | name[i], &esym)) | |
5218 | return false; | |
5219 | } | |
5220 | } | |
5221 | ||
5222 | for (p = o->link_order_head; | |
5223 | p != (struct bfd_link_order *) NULL; | |
5224 | p = p->next) | |
5225 | { | |
5226 | asection *input_section; | |
5227 | bfd *input_bfd; | |
5228 | const struct ecoff_debug_swap *input_swap; | |
5229 | struct ecoff_debug_info input_debug; | |
5230 | char *eraw_src; | |
5231 | char *eraw_end; | |
5232 | ||
5233 | if (p->type != bfd_indirect_link_order) | |
5234 | { | |
fd96f80f | 5235 | if (p->type == bfd_data_link_order) |
252b5132 RH |
5236 | continue; |
5237 | abort (); | |
5238 | } | |
5239 | ||
5240 | input_section = p->u.indirect.section; | |
5241 | input_bfd = input_section->owner; | |
5242 | ||
5243 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour | |
5244 | || (get_elf_backend_data (input_bfd) | |
5245 | ->elf_backend_ecoff_debug_swap) == NULL) | |
5246 | { | |
5247 | /* I don't know what a non ALPHA ELF bfd would be | |
5248 | doing with a .mdebug section, but I don't really | |
5249 | want to deal with it. */ | |
5250 | continue; | |
5251 | } | |
5252 | ||
5253 | input_swap = (get_elf_backend_data (input_bfd) | |
5254 | ->elf_backend_ecoff_debug_swap); | |
5255 | ||
5256 | BFD_ASSERT (p->size == input_section->_raw_size); | |
5257 | ||
5258 | /* The ECOFF linking code expects that we have already | |
5259 | read in the debugging information and set up an | |
5260 | ecoff_debug_info structure, so we do that now. */ | |
5261 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, | |
5262 | &input_debug)) | |
5263 | return false; | |
5264 | ||
5265 | if (! (bfd_ecoff_debug_accumulate | |
5266 | (mdebug_handle, abfd, &debug, swap, input_bfd, | |
5267 | &input_debug, input_swap, info))) | |
5268 | return false; | |
5269 | ||
5270 | /* Loop through the external symbols. For each one with | |
5271 | interesting information, try to find the symbol in | |
5272 | the linker global hash table and save the information | |
5273 | for the output external symbols. */ | |
5274 | eraw_src = input_debug.external_ext; | |
5275 | eraw_end = (eraw_src | |
5276 | + (input_debug.symbolic_header.iextMax | |
5277 | * input_swap->external_ext_size)); | |
5278 | for (; | |
5279 | eraw_src < eraw_end; | |
5280 | eraw_src += input_swap->external_ext_size) | |
5281 | { | |
5282 | EXTR ext; | |
5283 | const char *name; | |
5284 | struct alpha_elf_link_hash_entry *h; | |
5285 | ||
5286 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); | |
5287 | if (ext.asym.sc == scNil | |
5288 | || ext.asym.sc == scUndefined | |
5289 | || ext.asym.sc == scSUndefined) | |
5290 | continue; | |
5291 | ||
5292 | name = input_debug.ssext + ext.asym.iss; | |
5293 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), | |
5294 | name, false, false, true); | |
5295 | if (h == NULL || h->esym.ifd != -2) | |
5296 | continue; | |
5297 | ||
5298 | if (ext.ifd != -1) | |
5299 | { | |
5300 | BFD_ASSERT (ext.ifd | |
5301 | < input_debug.symbolic_header.ifdMax); | |
5302 | ext.ifd = input_debug.ifdmap[ext.ifd]; | |
5303 | } | |
5304 | ||
5305 | h->esym = ext; | |
5306 | } | |
5307 | ||
5308 | /* Free up the information we just read. */ | |
5309 | free (input_debug.line); | |
5310 | free (input_debug.external_dnr); | |
5311 | free (input_debug.external_pdr); | |
5312 | free (input_debug.external_sym); | |
5313 | free (input_debug.external_opt); | |
5314 | free (input_debug.external_aux); | |
5315 | free (input_debug.ss); | |
5316 | free (input_debug.ssext); | |
5317 | free (input_debug.external_fdr); | |
5318 | free (input_debug.external_rfd); | |
5319 | free (input_debug.external_ext); | |
5320 | ||
5321 | /* Hack: reset the SEC_HAS_CONTENTS flag so that | |
5322 | elf_link_input_bfd ignores this section. */ | |
5323 | input_section->flags &=~ SEC_HAS_CONTENTS; | |
5324 | } | |
5325 | ||
252b5132 RH |
5326 | /* Build the external symbol information. */ |
5327 | einfo.abfd = abfd; | |
5328 | einfo.info = info; | |
5329 | einfo.debug = &debug; | |
5330 | einfo.swap = swap; | |
5331 | einfo.failed = false; | |
5332 | elf_link_hash_traverse (elf_hash_table (info), | |
5333 | elf64_alpha_output_extsym, | |
5334 | (PTR) &einfo); | |
5335 | if (einfo.failed) | |
5336 | return false; | |
5337 | ||
5338 | /* Set the size of the .mdebug section. */ | |
5339 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); | |
5340 | ||
5341 | /* Skip this section later on (I don't think this currently | |
5342 | matters, but someday it might). */ | |
5343 | o->link_order_head = (struct bfd_link_order *) NULL; | |
5344 | ||
5345 | mdebug_sec = o; | |
5346 | } | |
252b5132 RH |
5347 | } |
5348 | ||
5349 | /* Invoke the regular ELF backend linker to do all the work. */ | |
5350 | if (! bfd_elf64_bfd_final_link (abfd, info)) | |
5351 | return false; | |
5352 | ||
5353 | /* Now write out the computed sections. */ | |
5354 | ||
5355 | /* The .got subsections... */ | |
5356 | { | |
5357 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; | |
5358 | for (i = alpha_elf_hash_table(info)->got_list; | |
5359 | i != NULL; | |
5360 | i = alpha_elf_tdata(i)->got_link_next) | |
5361 | { | |
5362 | asection *sgot; | |
5363 | ||
5364 | /* elf_bfd_final_link already did everything in dynobj. */ | |
5365 | if (i == dynobj) | |
5366 | continue; | |
5367 | ||
5368 | sgot = alpha_elf_tdata(i)->got; | |
5369 | if (! bfd_set_section_contents (abfd, sgot->output_section, | |
dc810e39 AM |
5370 | sgot->contents, |
5371 | (file_ptr) sgot->output_offset, | |
252b5132 RH |
5372 | sgot->_raw_size)) |
5373 | return false; | |
5374 | } | |
5375 | } | |
5376 | ||
252b5132 RH |
5377 | if (mdebug_sec != (asection *) NULL) |
5378 | { | |
5379 | BFD_ASSERT (abfd->output_has_begun); | |
5380 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, | |
5381 | swap, info, | |
5382 | mdebug_sec->filepos)) | |
5383 | return false; | |
5384 | ||
5385 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); | |
5386 | } | |
5387 | ||
252b5132 RH |
5388 | return true; |
5389 | } | |
fcfbdf31 JJ |
5390 | |
5391 | static enum elf_reloc_type_class | |
f51e552e AM |
5392 | elf64_alpha_reloc_type_class (rela) |
5393 | const Elf_Internal_Rela *rela; | |
fcfbdf31 | 5394 | { |
f51e552e | 5395 | switch ((int) ELF64_R_TYPE (rela->r_info)) |
fcfbdf31 JJ |
5396 | { |
5397 | case R_ALPHA_RELATIVE: | |
5398 | return reloc_class_relative; | |
5399 | case R_ALPHA_JMP_SLOT: | |
5400 | return reloc_class_plt; | |
5401 | case R_ALPHA_COPY: | |
5402 | return reloc_class_copy; | |
5403 | default: | |
5404 | return reloc_class_normal; | |
5405 | } | |
5406 | } | |
252b5132 RH |
5407 | \f |
5408 | /* ECOFF swapping routines. These are used when dealing with the | |
5409 | .mdebug section, which is in the ECOFF debugging format. Copied | |
fe8bc63d | 5410 | from elf32-mips.c. */ |
252b5132 RH |
5411 | static const struct ecoff_debug_swap |
5412 | elf64_alpha_ecoff_debug_swap = | |
5413 | { | |
5414 | /* Symbol table magic number. */ | |
5415 | magicSym2, | |
5416 | /* Alignment of debugging information. E.g., 4. */ | |
5417 | 8, | |
5418 | /* Sizes of external symbolic information. */ | |
5419 | sizeof (struct hdr_ext), | |
5420 | sizeof (struct dnr_ext), | |
5421 | sizeof (struct pdr_ext), | |
5422 | sizeof (struct sym_ext), | |
5423 | sizeof (struct opt_ext), | |
5424 | sizeof (struct fdr_ext), | |
5425 | sizeof (struct rfd_ext), | |
5426 | sizeof (struct ext_ext), | |
5427 | /* Functions to swap in external symbolic data. */ | |
5428 | ecoff_swap_hdr_in, | |
5429 | ecoff_swap_dnr_in, | |
5430 | ecoff_swap_pdr_in, | |
5431 | ecoff_swap_sym_in, | |
5432 | ecoff_swap_opt_in, | |
5433 | ecoff_swap_fdr_in, | |
5434 | ecoff_swap_rfd_in, | |
5435 | ecoff_swap_ext_in, | |
5436 | _bfd_ecoff_swap_tir_in, | |
5437 | _bfd_ecoff_swap_rndx_in, | |
5438 | /* Functions to swap out external symbolic data. */ | |
5439 | ecoff_swap_hdr_out, | |
5440 | ecoff_swap_dnr_out, | |
5441 | ecoff_swap_pdr_out, | |
5442 | ecoff_swap_sym_out, | |
5443 | ecoff_swap_opt_out, | |
5444 | ecoff_swap_fdr_out, | |
5445 | ecoff_swap_rfd_out, | |
5446 | ecoff_swap_ext_out, | |
5447 | _bfd_ecoff_swap_tir_out, | |
5448 | _bfd_ecoff_swap_rndx_out, | |
5449 | /* Function to read in symbolic data. */ | |
5450 | elf64_alpha_read_ecoff_info | |
5451 | }; | |
5452 | \f | |
70bcb145 JW |
5453 | /* Use a non-standard hash bucket size of 8. */ |
5454 | ||
5455 | const struct elf_size_info alpha_elf_size_info = | |
5456 | { | |
5457 | sizeof (Elf64_External_Ehdr), | |
5458 | sizeof (Elf64_External_Phdr), | |
5459 | sizeof (Elf64_External_Shdr), | |
5460 | sizeof (Elf64_External_Rel), | |
5461 | sizeof (Elf64_External_Rela), | |
5462 | sizeof (Elf64_External_Sym), | |
5463 | sizeof (Elf64_External_Dyn), | |
5464 | sizeof (Elf_External_Note), | |
5465 | 8, | |
5466 | 1, | |
5467 | 64, 8, | |
5468 | ELFCLASS64, EV_CURRENT, | |
5469 | bfd_elf64_write_out_phdrs, | |
5470 | bfd_elf64_write_shdrs_and_ehdr, | |
5471 | bfd_elf64_write_relocs, | |
5472 | bfd_elf64_swap_symbol_out, | |
5473 | bfd_elf64_slurp_reloc_table, | |
5474 | bfd_elf64_slurp_symbol_table, | |
5475 | bfd_elf64_swap_dyn_in, | |
5476 | bfd_elf64_swap_dyn_out, | |
5477 | NULL, | |
5478 | NULL, | |
5479 | NULL, | |
5480 | NULL | |
5481 | }; | |
5482 | ||
252b5132 RH |
5483 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
5484 | #define TARGET_LITTLE_NAME "elf64-alpha" | |
5485 | #define ELF_ARCH bfd_arch_alpha | |
56fc028e AJ |
5486 | #define ELF_MACHINE_CODE EM_ALPHA |
5487 | #define ELF_MAXPAGESIZE 0x10000 | |
252b5132 RH |
5488 | |
5489 | #define bfd_elf64_bfd_link_hash_table_create \ | |
5490 | elf64_alpha_bfd_link_hash_table_create | |
5491 | ||
5492 | #define bfd_elf64_bfd_reloc_type_lookup \ | |
5493 | elf64_alpha_bfd_reloc_type_lookup | |
5494 | #define elf_info_to_howto \ | |
5495 | elf64_alpha_info_to_howto | |
5496 | ||
5497 | #define bfd_elf64_mkobject \ | |
5498 | elf64_alpha_mkobject | |
5499 | #define elf_backend_object_p \ | |
5500 | elf64_alpha_object_p | |
5501 | ||
5502 | #define elf_backend_section_from_shdr \ | |
5503 | elf64_alpha_section_from_shdr | |
204692d7 RH |
5504 | #define elf_backend_section_flags \ |
5505 | elf64_alpha_section_flags | |
252b5132 RH |
5506 | #define elf_backend_fake_sections \ |
5507 | elf64_alpha_fake_sections | |
5508 | ||
5509 | #define bfd_elf64_bfd_is_local_label_name \ | |
5510 | elf64_alpha_is_local_label_name | |
5511 | #define bfd_elf64_find_nearest_line \ | |
5512 | elf64_alpha_find_nearest_line | |
5513 | #define bfd_elf64_bfd_relax_section \ | |
5514 | elf64_alpha_relax_section | |
5515 | ||
5516 | #define elf_backend_add_symbol_hook \ | |
5517 | elf64_alpha_add_symbol_hook | |
5518 | #define elf_backend_check_relocs \ | |
5519 | elf64_alpha_check_relocs | |
5520 | #define elf_backend_create_dynamic_sections \ | |
5521 | elf64_alpha_create_dynamic_sections | |
5522 | #define elf_backend_adjust_dynamic_symbol \ | |
5523 | elf64_alpha_adjust_dynamic_symbol | |
5524 | #define elf_backend_always_size_sections \ | |
5525 | elf64_alpha_always_size_sections | |
5526 | #define elf_backend_size_dynamic_sections \ | |
5527 | elf64_alpha_size_dynamic_sections | |
5528 | #define elf_backend_relocate_section \ | |
5529 | elf64_alpha_relocate_section | |
5530 | #define elf_backend_finish_dynamic_symbol \ | |
5531 | elf64_alpha_finish_dynamic_symbol | |
5532 | #define elf_backend_finish_dynamic_sections \ | |
5533 | elf64_alpha_finish_dynamic_sections | |
5534 | #define bfd_elf64_bfd_final_link \ | |
5535 | elf64_alpha_final_link | |
fcfbdf31 JJ |
5536 | #define elf_backend_reloc_type_class \ |
5537 | elf64_alpha_reloc_type_class | |
252b5132 RH |
5538 | |
5539 | #define elf_backend_ecoff_debug_swap \ | |
5540 | &elf64_alpha_ecoff_debug_swap | |
5541 | ||
70bcb145 JW |
5542 | #define elf_backend_size_info \ |
5543 | alpha_elf_size_info | |
5544 | ||
38b1a46c | 5545 | /* A few constants that determine how the .plt section is set up. */ |
252b5132 RH |
5546 | #define elf_backend_want_got_plt 0 |
5547 | #define elf_backend_plt_readonly 0 | |
5548 | #define elf_backend_want_plt_sym 1 | |
5549 | #define elf_backend_got_header_size 0 | |
5550 | #define elf_backend_plt_header_size PLT_HEADER_SIZE | |
5551 | ||
5552 | #include "elf64-target.h" |